Summer Falling in the Tetons

These last few days of summer hold memories of weeks past and expectations of weeks to come. Flowers are transforming into fruits and leaves are turning from shades of greens into hues of yellows, reds, and oranges.

Ski Lake Trail

Shadows lengthen as days shorten upon the montane meadows of Ski Lake Trail, Bridger Teton National Park.

Aster Flowers and More:

Several wildflowers are still blooming, although they look rather ragged. Most are members of the Aster Family and sport many guises. The typical “aster” flowers attract the final, almost “desperate” pollinators, which are clinging to flower heads seeking remnant nectar and pollen. A few sunflower-like species still shine along roadways. Other flowers are individually very discreet, at least until they bloom together in such forces that you can’t fail to notice the yellow cast of pollen. And yet another species just stinks.

Note: Identification of Asters emphasizes “bracts”. These leaf-like structures surround the heads.  Heads consist of the bracts, a receptacle (platform), and many individual flowers whorled inside. Bracts are highly variable, beautiful, and helpful in ID. (also note in identification of any plant: look at several individuals to get full variation in size, color, features.)

The non-native, invasive, but forever fascinating and in fact beautiful, Musk ThistleCarduus nutans – represents the change of the season:

A bumblebee digs deep into the elongate violet blue flowers surrounded by the armour of stiff thick bracts.

A bee digs deep into the elongate violet-blue flowers surrounded by the armor of thick bracts.

Nearby, wind teases out the tuffs of fluff, which carry seeds into unknown adventures…likely to become pests on nearby lands.

Nearby, wind teases out tuffs of fluff, which carry seeds of Musk Thistle into unknown adventures…likely to become pests on nearby lands.

Two similar asters attract butterflies and bees:

Leafybract AsterSymphyotrichum foliaceum var. canbyi – is still blooming strong by seeps and streams or on higher elevation slopes. This species is relatively easy to separate from other aster species. (Another variety S. f. var. apricus is found in subalpine to alpine elevations.)

The bracts are loose, leaf-like shingles encircling the head.

The bracts are loose, leaf-like shingles encircling the head, hence the name Leafybract Aster. (Note these larger outer bracts may or may not be there.  Look at several flowers to see).

The elongate leaves cling while alternating up the 16”-30” stems.

The elongate leaves of Leafybract Aster cling more  and more closely while alternating up the 16”-30” stems. Note the many pale ray flowers and the relatively wide leaves which are typically <7 times as long as wide.

Pacific AsterSymphyotrichum ascendens – is a very common aster along roadsides and trails.

- is overall a smaller and bushier plant with the upper part of the 1-2’ stems covered with pale blue flowers.

Pacific Aster is overall a smaller and bushier plant than Leafybract Aster (above) with the upper part of the 1-2’ stems covered with pale lavender flowers.  The leaves are long and narrow >7x as long as wide.

The bracts are narrow, sharp pointed, and tightly held against the heads.

The bracts of Pacific Aster are narrow, sharp pointed, and tightly held against the heads.  The lower, outer bracts are much shorter than the inner upper bracts.

Two other aster species can be confusing:

The flowers of Thickstem AsterEurybia integrifolia – attract attention due to their larger size.

The relatively few ray flowers are an unusual intensity of violet-blue and the disc flowers are yellow turning purple. Looking closely, you can see that the flower heads and stems have many sticky glandular hairs.

In Thickstem Aster the relatively few ray flowers are an unusual intense violet-blue. The inner disc flowers begin yellowish turning purple. Looking closely, you can see that the flower heads and stems have many sticky glandular hairs, a very helpful ID feature. Often these parts turn deep purple. The upper leaves clasp the thick, slightly zigzag stems. Overall the plants are heftier (and certainly stickier) than the two aster species described above.

Hoary Spiny AstersMachaeranthera canescens – are still blooming on sage flats and other dry sites.  The delicate looking plants are deceptively durable.

Silvery hairs on stem and leaves reflect back intense light, reduce wind velocity, and shade the surface of the plants, thereby keeping the plants from transpiring too much water on hot windy days. The spines on the tips of the slightly toothed,1-2” leaves and at the tips of the outward curved flower bracts give the plant its name.

The violet blue flowers of Hoary Spiny Aster catch the eye along Granite Canyon Trail.  Tiny silvery hairs on stem and leaves reflect back intense light, reduce wind velocity, and shade the surface of the plants, thereby keeping the plants from transpiring too much water on hot windy days.     

The spines on the tips of the slightly toothed,1-2” leaves and at the tips of the outward curved flower bracts give the plant its name: Spiny Aster

The spines on the tips of the slightly toothed 1-2” leaves and at the tips of the outward curved flower bracts give the plant its name: Hoary Spiny Aster

Two sunflower-like flowers persist along roadsides and trails.

Showy Goldeneye - Viqueria multiflora – continues to stare at you along portions of Ski Lake and History Trails near Teton Pass, as well as, roadsides of Grand Teton National Park. The 2-3” leaves are opposite and slightly arrow-shaped. The broad, golden ray flowers pale towards their tips. The plants average about 2’ tall.

Showy GoldeneyeViqueria multiflora – continues to stare at you along portions of Ski Lake and History Trails near Teton Pass, as well as, roadsides of Grand Teton National Park. The 2-3” leaves are opposite and have pinnately veined leaves. The golden ray flowers pale towards their tips. The wiry plants average about 2’ tall.

Curly Cup Gumweed—Grindellia squarrosa – is easy to recognize. Resinous bracts curl back and fuse together forming spiny cups beaming brilliant rays of sunshine. They thrive along dry, disturbed edges of the inner park road.

Curly Cup GumweedGrindellia squarrosa – is easy to recognize. Resinous bracts curl back and stick together to form spiny cups which beam brilliant rays of sunshine.  They thrive along dry, disturbed edges of the inner park road.

Two more very different members of the Aster Family with tiny flowers:

It is easy to overlook the fact that the Big Sagebrush – Artemesia tridentata var. vaseyana - is in full flower right now in parts of Jackson Hole.

It is easy to overlook the fact that the Big SagebrushArtemesia tridentata var. vaseyana – is in full flower right now in parts of Jackson Hole.

With Big Sagebrush, only a few individual flowers form the tiny flower heads, which are easily overlooked.

With Big Sagebrush, only a few individual flowers form the tiny flower heads, which are easily overlooked. Look carefully for the arching stigmas that will capture windblown pollen.

However, the tiny flowers arranged all along the slender stalks, add up to quite a show. They disperse millions of tiny pollen grains upon the wind. Such light and plentiful pollen is a source of allergies in humans.

While individually inconspicuous, the tiny flowers arranged all along the slender stalks add up to quite a show. They disperse millions of tiny pollen grains upon the wind. Such light and plentiful pollen is a source of allergies in humans.

Also, observe Big Sagebrush leaves. The larger ones produced when water was plentiful in spring are dying off, but the smaller leaves of early summer will remain through the winter.

Also, observe Big Sagebrush leaves. The larger ones produced when water was plentiful in spring are dying off, but the smaller leaves of early summer will remain throughout the winter.  The shrub is evergreen.  These leaves are essential to the survival of Sage Grouse.

A particularly odd ball member of the Aster Family:

The oddball Tarweed – Madia glomerata – is often crushed underfoot, releasing an intense smell reminding some people of tar. The glandular hairs containing the scent are a defense mechanism to deter grazing animals. It is interesting that some people like the fragrance while others find it pretty stinky, and in fact plants vary in their chemical arsenal. While many grazers avoid the plants, honeybees use the pollen and ground squirrels eat the protein-rich seeds. Tarweed is a native annual that is used in habitat restoration efforts.

Often only six inches high, TarweedMadia glomerata – is easily crushed underfoot, releasing an intense smell reminding some people of tar. The glandular hairs containing the scent are a defense mechanism to deter grazing animals large and small. It is interesting that some people like the fragrance while others find it pretty stinky. In fact plants vary in their chemical arsenal. While many grazers avoid the plants, honeybees use the pollen and ground squirrels eat the protein-rich seeds. Tarweed is a native annual that is used in habitat restoration efforts.

Schizocarps in the Carrot Family: A Quiz

Many of the members of the Carrot or Parsley Family (Apiaceae) are now in fruit. Below are photos of “schizocarps” – the uniquely designed fruits of this family: they split in half and are arranged in umbrella-like structures. Can you determine which species they belong to (hints provided): Wild LicoriceOsmorhiza occidentalis; Cow-parsnipHeracleum spondylium; Fernleaf LovageLigusticum filicinumSharp-tooth AngelicaAngelica arguta, Common YampaPerideridia montana? (Answers at end.)

Look closely: the fruits are flatted top to bottom and have 3 ridges as well as wings.

A. Look closely: the two sides of the horizontally splitting fruits are each flat with 3 ridges on the back and wings to the sides.

A. The umbels of fruits stand 5-6' feet high on smooth stems in moist locations.

A. The umbels of fruits stand 5-6′ feet high on smooth stems in moist locations.

These plants bloomed late this summer predominantly in the sage flats. Fruits are short and relatively smooth. (see closeup below),

B. These plants bloomed late this summer predominantly in the sage flats. Fruits are almost round and relatively smooth. (see closeup below),

Another hint: the roots of this plant are favored by bears.

B. Another hint: the roots of this plant are favored by bears. Note the splitting of the individual fruits. Also the stylopodiums: the swollen, persistent bases of the stigmas.

Elongate fruits with a bit of a point are flavorful.

C. Two to three-foot plants of forest edges and meadows hold up elongate smooth, purple black fruits.  Note the beige central stalks (lower left) that held the two sided fruits which were flavorful when younger.

This slightly curved, ridged schizocarps are rounded.

D. These slightly curved, ridged schizocarps are more or less oblong.  The large compound leaves are finely dissected.

These fruits are very flat with two to three decorative lines.

E. These fruits are very flat with two to three decorative lines.  The plants are very large, coarsely hairy, and grow in moist areas.

Answers: A: Smooth-toothed Angelica B: Common Yampah C:Wild Licorice or Sweet-Cicely D: Fernleaf Lovage E: Cow-parsnip

Fleshy Fruits:

Last and not least, especially for the birds, bears, and small mammals of Jackson Hole, are the fruits of the Rose Family. When investigating the wild fruits, first consider your cultivated apples, cherries, peaches, plums, etc, which are relatives.  The flesh you are eating is actually the swollen base of fused sepals and petals and even anthers surrounding an inferior ovary in which seeds (pits or individual seeds) form, e.g. you are eating the ripened “hypanthium”. This fleshy juicy part is what most birds and mammals consume as well, although some rodents chew upon the hard coated seeds. The tasty fruit is the “reward” for dispersing the seeds.

Mountain Ash – Sorbus scopulina - decorates the beginning of Ski Lake Trail and various canyons. Note the shiny compound leaves, as well as the clusters of orange fruits.

Mountain AshSorbus scopulina – decorates the beginning of Ski Lake Trail and various canyons. Note the shiny compound leaves, as well as the heavy clusters of orange fruits.

Hawthorns – Crataegus douglasii – are filled with bunches of dark fruits protected (supposedly) by 1-2” long thorns. No wonder people are seeing black bears along the Moose-Wilson Road where this plant is particularly abundant. Do be careful hiking around berries of any kind right now.

Hawthorn trees – Crataegus douglasii – are filled with bunches of dark fruits protected (supposedly) by 1-2” long thorns. No wonder people are seeing black bears along the Moose-Wilson Road where this plant is particularly abundant. Do be careful hiking around berries of any kind right now.

Chokecherry – Prunus virginiana – Arranged in a raceme, several fruits dangle on short stems from a central stalk. Chemicals in the pits and leaves convert to hydrocyanic acid in the stomach of humans and livestock, which inhibits cellular respiration and the ability to use oxygen: in short they are poisonous. On the other hand, the fruits, are relished by many animals and numerous insect species overcome the defense systems. This plant is important for sustaining biodiversity.

Fruits of ChokecherryPrunus virginiana – are arranged in a raceme, e.g. fruits dangle on short stems from a long central stalk. If ingested by humans or livestock, chemicals in the pits and leaves convert to hydrocyanic acid which inhibits cellular respiration and the ability to use oxygen: in short they are poisonous. On the other hand, the fruits, are relished by many animals (which excrete the pits) and numerous insect species overcome the defense systems. Plants may or may not be poisonous to different species, and in different life stages.  This plant is very important for sustaining biodiversity.

Serviceberries – Amelanchier alnifolia – still retain some blue-purple fruits, although many birds such as robins, cedar waxwings, western tanagers, have already consumed them to fuel their migration south.

ServiceberriesAmelanchier alnifolia – still retain some red-blue-purple fruits, although many birds such as American robins, cedar waxwings, and western tanagers, have already consumed them to fuel their migration south.

Wood’s Rose - Rosa woodsii – holds several fruit at the tips of twigs. Rose hips are particularly high in vitamin C, perhaps as much as 60x as much as lemons….but who eats a whole lemon? These fruits will last on the plants through much of the winter, providing food when other resources are short.

Wood’s RoseRosa woodsii – holds several fruits at the tips of twigs. Rose hips are particularly high in vitamin C, perhaps as much as 60x as much as lemons….but who really eats lemons?
These fruits will last on the plants through much of the winter, providing food when other resources are scarce.

Fireweed Finale:

FireweedChamerion/Epilobium angustifolium – is the traditional harbinger of autumn.

 Fireweed is almost finished blooming, with bumblebees garnering the last bits of pollen and nectar.

Fireweed is almost finished blooming, with bumblebees garnering the last bits of pollen and nectar.

The elongated seeds have burst in a whirlwind dance of dispersal.

The elongated fruits of Fireweed have burst into a whirlwind dance of seeds dispersing.

The crimson leaves provide an encore before the hard frost.

The crimson leaves provide an encore before hard frost.

Enjoy the fall:

Plants can be enjoyed in all seasons for their flowers, fruits, leaves, bark, structure. Observe closely and celebrate the cycle of the year.

Aspen groves on Munger Mountain are full of fall treats.

Aspen groves on Munger Mountain are full of fall treats.

Some cultures revere the beauty of aging. Here is a dignified, grizzled head of the statuesque Five-nerved Helianthella – Helianthella quinquenervis.

Some cultures revere the beauty of aging. Here is a dignified, grizzled head of the statuesque Five-nerved HelianthellaHelianthella quinquenervis.  

Happy botanizing!

Frances Clark, Wilson, WY

August 31, 2015

P.S. This blog is designed to encourage further exploration into the wonders of our native plant world.  As always, we appreciate you comments, additions, and corrections.

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Big Favorites Found Mid Summer in the Tetons – July 2015

Moose-Wilson Road has an array of tall forbs (wildflowers) - Tall Larkspur, Butterweed Groundsel, and Canada Goldenrod.

Moose-Wilson Road has an array of tall forbs (wildflowers) – Tall Larkspur, Butterweed Groundsel, and Canada Goldenrod.

As one drives along the Moose-Wilson Road or up to Two Ocean Lake, or hikes through montane meadows, several tall 3-6’ wildflower species may divert your attention. Most of these thrive in relatively moist and/or cool situations where they can take up sufficient moisture to support their large bodies of stems and leaves, along with plentiful, showy flowers.

Moose Pond Trail has a small meadow with Cow Parsnip, Giant Hyssop, Sticky Geranium and more!

Moose Pond Trail has a small meadow with Cow Parsnip, Giant Hyssop, Sticky Geranium and more!

Giant Hyssop - Agastache urtifolia - is a member of the Mint Family.  And is occasionally pollinated by hummingbirds,

Giant HyssopAgastache urticifolia – is a member of the Mint Family.   Feel the square stem, smell the fragrant leaves, and observe what comes to the “irregular” flowers. Occasionally it is pollinated by hummingbirds, probably attracted by the reddish pink bracts.  The stamens protrude beyond the fused petals, bonking pollen on the heads of pollinators.

Pause and take a close look and think about what is happening: What do the flowers look like: are they simple or complicated; all they all the same color or highly variable; what are their pollinators? Unseen variations may be that some species are extremely poisonous. Other species display an extraordinary abundance of flowers this year due to unusual environmental triggers last year. Many factors: environmental and biological–affect what grows where in Teton County and well beyond. Below are a few species to ponder.

Tall Larkspur - Delphinium occidentale - comes in a range of colors from white to deep blue.

Tall LarkspurDelphinium occidentale– comes in a range of colors from white to deep blue.

Tall LarkspurDelphinium occidentale – Many have noticed the 4-6’ tall, deep blue, pale blue, to white spires along the Moose-Wilson Road and meadows of Two-Ocean Lake and near Goodwin Lake Trail. The reason for the three color variations of our Grand Teton populations was studied by Ron Scogin in 1993. While he didn’t come to any direct conclusions, the researcher found that all plants had similar number of flower stalks (inflorescences) although the albino stalks had many fewer flowers/stem. All had similar seed results per flower indicating that the pollinators–bees and hummingbirds–visited them without discrimination. Furthermore, over time, the proportion of each color morph has remained pretty much the same. The proportion was likely dependent on the original number of seeds per morph and are result of the “founder effect”. So far the colors remain separate and in the same approximate proportions. A follow up study, with new genetic understanding, would be interesting.  For more details on the work 20 years ago: http://repository.uwyo.edu/cgi/viewcontent.cgi?article=1792&context=uwnpsrc_reports

Tall Larkspur has trumpet shaped flowers that require pollinators to push deeply into them to receiive their rewards.

Tall Larkspur – Delphinium occidentale – has trumpet shaped flowers that require pollinators to push deeply into them to receive their rewards. (And an esoteric taxonomic note:  According to the expert Holmgrens, we have only D. occidentale, not D. glaucum here in Wyoming.  It comes down to hairy, not smooth, follicles or fruits.)

MonkshoodAconitum columbianum –The genus name Aconitum comes from the Greek akoniton: Theophrastis used this name to indicate “poisonous plant”, which indeed it is!

Monkshood - Aconitum columbianum - is related to the similar looking Tall Larkspur.  both are in the Buttercup Family and have complicated flowers.  It is also deadly poisonous.

MonkshoodAconitum columbianum – is related to the similar looking Tall Larkspur (see above). both are in the highly variable Buttercup Family and have complicated flowers. It is also deadly poisonous.

Monkshood is pollinated by both queen and worker bumblebees, as well as moths and hummingbirds. Observe the structure of the flower. The five sepals (not petals) form a complex purple flower.

Aconitum columbianum

Monkshood sports a “hood” that covers two petals and nectaries. Four additional sepals: two side, two bottom, surround the many anthers and three stigmas. All parts of the plant are poisonous. Found in wet meadows.

The two lower and two side sepals encase and then expose the numerous anthers, while the hood covers two greatly altered petals which contain a stiff coiled spur terminating with nectar glands. Observe when the anthers open and release their pollen (then fade), and when the 3 hidden stigmas become available amidst the anthers: the timing of the male and female reproductive parts is separate to facilitate out-crossing.

Sharp-tooth AngelicaAngelica arguta – A member of the Parsley Family – as one can tell by the umbrella arrangement of their tiny flowers, this plant typically grows to 4-5’ in moist montane situations.

Angelica is in the Parsley Family, same as the similar Cow Parsnip.  But Angelica has more divided leaves and is smooth, not hairy.

Sharp-tooth AngelicaAngelica arguta – is in the Parsley Family, same as Cow Parsnip (see below). But Angelica has more divided leaves and has a smooth, not hairy, stem.

Sharp-tooth Angelica can be mistaken for the more robust Cow Parsnip, but notice the large, toothed leaves are divided into numerous, smaller leaflets. The stem is smooth and slightly bluish. Angelicas have been used for medicines by many indigenous people, but note the species also resembles Water Hemlock – Cicuta maculata – called “suicide plant” by the Iroquois – which also grows in moist to wet sites! Always make sure you know the ID of any plant you use!

Water Hemlock - Cicuta maculata - grows in similar places and can be mistaken for Angelica.  The Iroquois called this plant

Water HemlockCicuta maculata – grows in similar wet places and can be mistaken for Angelica. The Iroquois called this plant “suicide plant” for a reason. Here it is in a ditch in Wilson.

Water Hemlock - Cicuta maculata - looks very similar to Angelica, but it is not an angel.  It is deadly poison.  Note the veins go to the junctions of leaf.  Know your plants before you touch or eat them!

Water HemlockCicuta maculata – looks very similar to Angelica, but it is not an angel! It is deadly poison. Note the side veins end at the indentations of the teeth of the leaf. Know your plants well  before you touch or eat them!

Cow Parsnip Heracleum spondylium – One of the largest and most obvious members of the Parsley Family, this giant is found in wet meadows. The inflorescence is the size of a dinner plate. The stems are very hairy (hairs may cause a rash) and the giant leaves are divided into three large, jagged lobed leaflets.   Many pollinators take advantage of the numerous tiny flowers.

Cow Parsnip - Heracleum spondylium - has large jagged leaves, plate-sized flower clusters, and is hairy.

Cow ParsnipHeracleum spondylium – has large jagged leaves, plate-sized flower clusters, and very hairy stems.  The hairs can cause a rash in some people.

Butterweed Groundsel – Senecio serra – This tall, 4-5’ yellow composite plant is frequent in moist to wet meadows. The leaves are 4-5”, oblong to lance-shaped, with many teeth (unlike the similar S. triangularis whose leaves are elongate triangles.) Senecios typically have a “palisade fence” of waxy, even-sized bracts surrounding the flower head. In this case, each bract is black tipped. The showy ray flowers are few—here about 6-8, and the disc flowers several. Combined, the head provides a platform for many pollinators—including butterflies–which can crawl over and sip nectar from each of the tiny goblet- shaped disc flowers. The fruits (achenes) will have a tuft of white fluff to help send them on their way. “Senes” = old man. Ragwort is another common name.

Butterweed Groundsel - Senecio serra - is common along road sides and in meadows right now.

Butterweed GroundselSenecio serra – is common along road sides and in meadows right now.  The 5-6″ elongated, serrated (like a saw) leaves help separate it from other large Groundsel species.

Butterweed Groundsel has shiny bracts, often black-tipped, surrounding each head of flowers.

Butterweed Groundsel has shiny, even sized bracts, often black-tipped, surrounding each head of flowers.

Five-veined Little Sunflower/Helianthella –Helianthella quinquenervis –  Not so little, this 3-4’ robust plant is closely related to One-flowered Sunflower (H. uniflora) seen throughout the valley these past few weeks. This species is larger, the flower heads are bent at right angles to the stalk—they appear to glare straight at you, and the lower leaves have 5 strong veins. It prefers more moist conditions than H. uniflora.

Five-nerved Helianthella - Helianthella quinquenervis - appears to stare right at you!

Five-nerved HelianthellaHelianthella quinquenervis – appears to stare right at you!

Five-nerved Helianthella is named for its 5 strong veins on the lower leaves.

Five-nerved Helianthella is named for its 5 strong veins on the lower leaves.

Western ConeflowerRudbeckia occidentalis – This member of the Sunflower Family never looks quite in bloom (compare to Helilanthella above). We expect yellow “ray flowers” to whorl around the outside of each “head”.  However, in this species, there are no flashy ray flowers, only a whorl of green bracts.  There is a “cone” of tiny “disc” flowers which begin to bloom from the base and gradually, with time, spiral up to the tip.  The bees know it is ready for pollination somehow and are often seen crawling around, dipping their mouth parts into the tiny maroon cups for nectar and collecting pollen.

Western Coneflower - Rudbeckia occidentale - Tiny disc flowers attract bee pollinators.  It flowers from bottom to top.

Western ConeflowerRudbeckia occidentalis – Tiny disc flowers with yellow pollen attract bee pollinators. It flowers from bottom to top.

Mountain or Wild HollyhockIliamna rivularis – Many people notice this pink plant popping up here or there along the park road or main highway, as well as in meadows or woodland edges.

Mountain Hollyhock - Illiamna - pops up along highways, in the woods, and especially in areas after forest fires.

Mountain or Wild HollyhockIliamna rivularis – pops up along highways, in the woods, and especially in areas after forest fires.

The stems are lined with many large 2-3” flowers. The stamens form a tube in the center with 5 roundish stigmas sticking out. The leaves are like maple leaves.

The fruit of Mountain Hollyhock - Iliamna rivularis -  looks like a hairy tangerine.

The fruit of Mountain Hollyhock – Iliamna rivularis – looks like a hairy tangerine.

The hairy fruit will look like a somewhat compressed 1” tangerine which divides into several sections. This plant in the Mallow Family (Malvaceae) is related to garden hollyhock, marshmallow, okra, and cotton.

Mountain BluebellsMertensia ciliata – Colonies of 2-3’ bluebells inhabit wet seeps and meadows at high elevations.

Mountain Bluebells - Mertensia ciliata - colonizes wet meadows at high elevations.

Mountain Bluebell – Mertensia ciliata – colonizes wet meadows at high elevations, for instance above Ski Lake.

The 2-4” oval, bluish green leaves alternate up the stems which often arch over stream sides. The dangling tubular flowers start out pinkish and then turn blue when ready to attract bumblebee pollinators. The anthers have small pores at their tips. The frequency of buzzing bee-wing muscles shakes out the pollen onto the bee!

Mountain  Bluebells are buzz-pollinated.  Bees vibrate their wings at a certain frequency, and pollen falls onto their bellies!

Mountain BluebellsMertensia ciliata – are buzz-pollinated. Bees vibrate their wings at a certain frequency, and pollen falls onto their bellies! Note the flowers go from pinkish purple to light blue, signaling to the bees when to visit.

Mountain Bluebells are self-compatible—they can receive their own pollen and make seeds, although the resultant off-spring often are not as strong – inbreeding depression.

Monkey FlowerMimulus lewisii – These cheerful brilliant pink flowers with splashes of yellow on their lower petals ornament rivulets and seeps in the cool mountains. The leaves of Monkey Flower, which have three strong veins, are arranged opposite to each other along 2-3’ stems. They are pollinated by bumble- and mason bees.

Lewis' Monkey Flower - Mimulus lewisii - graces seeps with its cheerful blooms.

Lewis’ Monkey FlowerMimulus lewisii – graces seeps with its cheerful blooms.  You can see the nectar guides attracting bumble- and mason bees into the center of the flower.

Some of you may have seen a very similar species in the Sierras – M. cardinalis – whose red flowers are pollinated by hummingbirds. In the laboratory, the species will interbreed; however, in nature where the ranges of the two species overlap they do not exchange genes: the pollinators are different. Therefore, the two species maintain their integrity and continue to evolve in their own way.

False Hellebore - Veratrum californicum/tenui - is having a

False HelleboreVeratrum californicum/tenuipetalum – is having a “mast” year. This profuse stand is growing the west end of Phelps Lake.

False Hellebore – Veratrum californicum/tenuipetalum – This is a very poisonous plant in the Lily family (now split off into the Bunch-berry Family-Melanthiaceae) which grows in very damp soils. It has formed a very large, 6’-7′-tall colony along the west end of Phelps Lake this year. This is a display of “masting”—when a plant species produces many, many flowers and fruits synchronously in one year. The overabundance attracts many pollinators: flies during the day, moths at night, and the plentitude makes it difficult for all the seeds to be consumed.

The abundance of flowers and then hopefully seeds first attracts many pollinators, and once pollinated produces an abundance of seeds--too many to be eaten by hungry predators.

The abundance of flowers of False Hellebore first satiates pollinators, and then once they are pollinated, hopefully flowers produce an abundance of seeds–too many to be eaten by hungry predators.

Research indicates that “masting” of False Hellebore is cued by cool July temperatures the previous year, a trigger which could be affected by warming of climate change. Observe the flowers near the top of the bountiful flower stalks: they are typically male and female, while the lower flowers are only male.  See if you can find the difference.

Look at the flowers closely.  Apparently the upper flowers are

Look at the flowers of False Hellebore closely. Apparently the upper flowers are “perfect” with both male and female parts. The lower flowers have only male parts. Hard to tell which this example is.

Information on dispersers and fate of the seeds of False Hellebores was not readily available in a web search. However, there is great information on the masting biology of these plants: http://www.amjbot.org/content/100/3/519.full

These are just a few of the fascinating flowers in bloom right now.  A future posting will discuss some of the smaller species that are beginning to flourish.  In any case, keep on hiking, observing, and enjoying the bounty of flowers we have this summer!

Frances Clark, Wilson, WY

July 23, 2015

P.S. As always, this blogger appreciates comments, corrections, additions to the information provided here.

9:50 p.m.

Late June Blooms in Jackson Hole!

Throughout Jackson Hole native plants are flowering in abundance due to plentiful May rains and now the unseasonably hot weather.  We have picked only a few highlights. There is much more to observe.

Snowbrush on the Moraines:

Snowbrush Ceonothus- Ceonothus velutinus – covers the burn area of the 1999 Alder Fire located south and west of String Lake.  You can also see Snowbrush in another burned forest on the way to Bradley and Taggart Lakes.  Not only are the flowers showy, but also the fragrance is heavenly.

Seeds of Snowbrush - Ceonothus velutinus - can remain in the soil for decades, ready to sprout after a fire.

Seeds of Snowbrush CeonothusCeonothus velutinus – can remain dormant in soil for decades, ready to sprout after a fire.  Mature plants cover the moraine by String Lake, Grand Teton National Park.

Smokebrush has elegant clusters of white flowers and leaves with three strong veins and a glossy texture on the surface. Buds can be sticky with resin.

Snowbrush Ceonothus has elegant clusters of white flowers and 3-4″ leaves with three strong veins and a glossy texture on the surface. Buds and leaves can be sticky with resin, which provides a different fragrance.

Mulesears on Mountain Sides

Another big show is Mulesear Wyethia (Mulesear for short).  Mulesear looks to many people like the popular and plentiful Balsamroot because of its big yellow sunflower-like flowers and its large leaves. However, Mulesear has darker yellow ray flowers, glossy green elliptical leaves that grow up the stems compared to paler yellow flowers and arrow-shaped, gray-green leaves that grow only from the base of Balsamroot.  Importantly, Mulesear grows in heavier clay soils vs. the well drained soils where we find Balsamroot.

Mulesears have large, dark yellow flowers, 12-18

Mulesear Wyethia – Wyethia amplexicaulis – has large, dark yellow flowers and 12-18″ elongate, deep green leaves (the size and shape of mule’s ears!). It grows in heavier soils than the look-alike Balsamroot.

Cliff Creek drainage in the Bridger-Teton National Forest south of Hoback was magnificent last week.

Cliff Creek drainage in the Bridger-Teton National Forest south of Hoback was magnificent last week. These mountains consist of sedimentary rock which breaks down into clay particles, forming heavier soils.  Note in the distance the mist of pine pollen wafted on the wind.

Wally's World trail off Fall Creek Road near Munger Mountain was full of wildflowers June 20.

Wally’s World trail off Fall Creek Road near Munger Mountain was full of wildflowers June 20.

You can also see stands of Mulesear along the highway near Antelope Flats Road and up by Cattleman’s Bridge near Oxbow Bend in Grand Teton National Park.

Sulphur Buckwheat and More on Sage Flats

The glacial outwash plains of Jackson Hole within Grand Teton National Park are in full bloom.  Amidst the silvery Big Sagebrush (Artemesia tridentata var. vaseyana), is a tapestry of color: creams, blues, yellows, reds, maroons.  The plant composition varies but the following species are typical at this time.

Sulphur Buckwheat - Eriogonum umbellatum - has mats of small oval leaves, and umbels of creamy yellow flowers which are often tinged with pink.  They are blooming throughout the valley.

Sulphur BuckwheatEriogonum umbellatum – forms mats of small oval leaves and clouds of creamy yellow flowers which are often tinged with pink. Sulphur Buckwheat is  blooming throughout the valley. Note the whorl of leaves just below the inflorescence or flower cluster.

Sulphur Buckwheat, grasses, and Sedum are common at the beginning of the Bradley Taggart Trail Head.

Sulphur Buckwheat and Lance-leaved Stonecrop are overtopped by many grasses at the beginning of the Bradley-Taggart Trail.  Grasses seem more abundant this year compared to 2014.

Several species of grasses overtop the low-growing, showy flowers.  Melica -Melica spectabilis - has elegant egg-shaped spikelets.

Several species of grasses are in full bloom, although the flowers are naturally inconspicuous. Grasses count on the wind for pollination and the wind cannot see or smell, so no fancy colors , patterns, or  scents are necessary.  Even so, close up, Melicgrass –Melica spectabilis – has elegant, dangling spikelets of individual flowers.  Light, wind-dispersed pollen is causing hay-fever (hay comes from grasses!) in many people right now.

Lance-leaved sedum - Sedum lanceolatum - has succulent 1/2

Lance-leaved Stonecrop – Sedum lanceolatum – is tucked below the taller plants.  They have succulent 1/2″ leaves on 6-8″ stems and bouquets of 5-parted, star-shaped yellow flowers. Members of this desert-adapted plant family have a very different metabolism than most other plants.  Look up “CAM- Crassulacean acid metabolism” on the internet to find out more!

Scarlet Gilia - Ipomopsis aggregata - attracts hummingbird, it main pollinator.  Birds see red (insects don't) and the stiffly arrayed tubular flowers enable hummingbirds to hover while lapping up nectar deep within.

Scarlet GiliaIpomopsis aggregata – attracts hummingbirds. Birds see red (insects don’t) and the stiffly arrayed tubular flowers enable hummingbirds to hover while lapping up nectar deep within.  In the process of drinking the high-test nectar, the forehead of the bird bumps the protruding yellow anthers, collecting pollen.  Upon the bird’s next visit, the next flower may have a long stigma to which the pollen will stick.  With luck, the pollen tube grows and fertilizes the egg deep inside the plant….fertile seeds then form!

The south end of the inner Park Road includes dashes of Scarlet Gilia as well as swaths of rusty Dock.

The south end of the Park Road includes tall accents of Scarlet Gilia, as well as plumes of creamy Sulphur Buckwheat.  

Silky Lupine - Lupinus sericeus

Silky LupineLupinus sericeus – is typical of sage flats and dry hillsides.  It has hairs on the backside of the “banner” of the pea-like flowers and very hairy palmate leaves.  As of this posting, I have seen few plants flowering compared to last year. Are you finding it?

Sheep Sorel - Rumex acetosella - adds another color to the tapestry.  A plant of more disturbed soils it is a non-native species.  Plants grow as either males or females.  Take a close look for pollen (male) or stigmas and ovaries (female).

Sheep-sorrrelRumex acetosella – adds another color to the tapestry. A plant of disturbed soils, it is a non-native species. Plants have tiny either males or female flowers . Take a close look to find anthers (male) or stigmas and ovaries (female). Sheep-sorrel happens to be in the same family – Polygonaceae – as Sulphur Buckwheat – Eriognoum spp.

Look for the brightly colored Rocky Mountain Groundsel - Packera (formerly Senecio) streptanthifolia - pops up in odd corners of the sageflats: Here it is in Lupine Meadows. The leaves vary greatly in their shape and incisions.

Bright yellow Rocky Mountain GroundselPackera (formerly Senecio) streptanthifolia – pops up in odd corners of the sage flats, such as Lupine Meadows. The leaves vary greatly in their shape and incisions.  The “flowers” typically have only 8-10 “petals” or ray flowers, per head.

Hawksbeard - Crepis aggregata - is common along the Gros Ventre Road. Note the sword-shaped leaves at the base of the plant.

This species of HawksbeardCrepis aggregata – is common along the Gros Ventre Road. Note the sword-shaped, deeply lobed leaves at the base of the plant.  The dozens of flower heads have only a few ray flowers each.

Little Sunflowers - Helianthella uniflora - are big bright spots on dry slopes surrounding the flats, and occasionally on the flats.

One-flower Sunflowers  or HelianthellasHelianthella uniflora – are 2- to 3-foot tall bright spots in the sage flats along Gros Ventre Road.  They also are found along dry river benches and lower slopes of the buttes. It’s more robust relative – Five-nerved Helianthella – H. quinquenervis – blooms here and there. Look for the 5 strong nerves on the large lower leaves to help distinguish the two.

These last three yellow species are all members of the Aster or Sunflower Family.  It is fun to compare their flowers, leaves, and habit (size, shape, and posture) of these relatives.

Aspen Groves on Rolling Hills 

Aspen stands are particularly welcome oases.  The dappled light created by the shimmering deciduous leaves and the more alkaline soils compared to the pine forests nurtures a rich array of flowers.  The trees themselves are homes to many woodpeckers which in turn create holes for nesting House Wrens, Mountain Bluebirds, and Tree Swallows.

Aspen stands feature a rich array of flowers and birds.  The species vary from place to place. This shot is taken on the west slope of Munger Mountain.

Stands of AspenPopulus tremuloides – feature a rich array of flowers and birds. The mix of species varies from place to place. This shot is taken on the west slope of Munger Mountain. Aspen are easily seen at Cascade Canyon Trail Head, Oxbow Bend, and Two-Ocean Lake Road in GTNP.

One of the most common flowers in aspen groves, meadows, and sage flats is the Sticky Geranium.

Sticky Geranium is common throughout the valley.  Its wide open flowers with obvious nectar guides form landing pads available to many types of pollinators.

Sticky GeraniumGeranium viscossissimum – is common throughout the valley. Its wide open petals with obvious nectar guides form landing pads available to many types of pollinators. 

Two members of the Parsley Family are found in open forests. Can you figure out from the pictures below why it was once called the Umbelliferae Family?

Fernleaf  Lovage - Ligusticum filicinum - is a tall - 2-4 foot plant with ferny, greatly dissected leaves.  The white flowers held on wide umbels are equally as delicate.

Fernleaf LovageLigusticum filicinum – is a tall – 3- to 5-foot plant with ferny, greatly dissected leaves.  The white flowers held on wide umbels are equally as delicate.

Related to the lovage is Western Sweetroot, Wild Licorice - Osmorhiza occidentalis - also has delicate flowers in umbels, but the compound leaves are much less divided.

Related to Fernleaf Lovage, Western Sweetroot, Wild LicoriceOsmorhiza occidentalis – has delicate yellow-green flowers in umbels.  The compound leaves are much less divided and have the fragrance of anise or licorice, as does the root.  True licorice comes from a member of the Pea Family, not the Parsley Family.

Wild Licorice or Sweet Cicely - Osmorhiza occidentale - is a member of the Carrot or Parsley Family.  As with many members of this family - anise, caraway, dill - the seeds are filled with flavor.  Take a taste!

Note the elongate, ribbed, smooth fruit.  Western Sweetroot or Wild LicoriceOsmorhiza occidentalis – is a member of the Carrot or Parsley Family.  As with many members of this family – anise, caraway, dill – the seeds are filled with flavor. Try a taste!

Two members of the Orchid Family can be discovered along trails in aspen groves and elsewhere if you are lucky.  Both are small plants with only a few 1-2′ stems of a reddish to fleshy hue.  They have no chlorophyll but depend on a fungal relationship to nourish the plants. Coralroots get their names from their knobby roots.

Spotted Coralroot - Corallorhiza maculata - is variable in its decoration. However 2 lobes on either side of the base of the lowest petal (lip) and a bump (spur) under the throat of flower help in ID.

Spotted CoralrootCorallorhiza maculata – is variable in its decoration. However, a lobe on each side of the base of the lowest petal (lip) and a bump (spur) under the throat of the flower help confirm ID.

Striped Coralroot - Corrallorhiza striata - The largest of 5 species of Coralroot, this reddish plant has no chlorophyll, but rather depends on a fungus to relay nutrients from other plants nearby.

Striped CoralrootCorrallorhiza striata – is the largest of 5 species of Coralroot in Teton County.  This reddish plant has no chlorophyll, but rather depends on a fungus to relay nutrients from other plants nearby.

Shrubs of Note

Several shrubs are coming into bloom right now.  Serviceberry, Hawthorn, and Chokecherry are beginning to develop fruits that will be favored by bears, birds, and small mammals in the fall, particularly in such places as along the Moose-Wilson Road.  Antelopebush is also fading in the sage flats.  However, Mountain Ash and Elderberry are coming into bloom in the canyons.  Here are three other shrub species that are obvious in their habitats:

Rosa Woodsii - Wood's rose

Woods RoseRosa woodsii – flowers in abundance along roadsides. Many pink flowers are clustered together at the tips of twigs.  Another rose species with sparsely prickly branches bares flowers individually: Nootka Rose – R. nutkana.

Snowberry - Symphiocarpus oreophilus - a 2-3 foot shrub with opposite oval leaves, is blooming in both shade and sun throughout the valley.

Mountain Snowberry Symphiocarpus oreophilos – a 2-3 foot shrub with opposite oval leaves is blooming in both shade and sun throughout the valley.

Red-stemmed Dogwood - Cornus sericea - is a favorite food of browsing moose, as my ornamental plantings attest.  This wetland shrub is easy to identify with its opposite oval leaves with parallel veins and clusters of 4-petaled white flowers.

Red-stemmed DogwoodCornus stolonifera – is a favorite food of browsing moose, as my ornamental plantings attest. This wetland shrub is easy to identify with its opposite oval leaves with parallel veins and clusters of 4-petaled white flowers.

Odd Species:

The following are a few discoveries in particular habitat niches:

Streamsides and ditches:

White Bog Orchid - Platanthera dilatata - is found in wet spots.  The details of the small white flowers and the lovely fragrance help to identify it.

White Bog OrchidPlatanthera dilatata – is found in wet spots. The small white flowers have a lip or lower petal that is expanded near the base, and a spur extending underneath.  The lovely fragrance clinches its identity as White Bog Orchid.

Twisted Stalk - Strepotopus amplixifolia - graces the edges of streams.  The kinked stalk to the flower gives it its name.

Clasping Twisted StalkStreptopus amplixifolius – graces the edges of streams. The kinked stalk to the flower gives it its name.

Hot spot:

Now in bloom on the ledges by Kelly Warm Springs, this flower is gorgeous.  The pad-like stems break off to help in dispersal.  They attach readily to you!

Prickly PearOpuntia fragilis – is in bloom on the ledges by Kelly Warm Springs.  The flower is gorgeous. The pad-like stems break off easily (fragile) to help in dispersal. They will attach readily to you: do not touch!

Beneath my foot:

Hiking up Cliff Creek, by chance we didn’t step on this 3-4″ wonder.

Broomrape - Orobanche uniflora - is a mysterious species of an odd family.  Scientists don't even know if it is an annual or perennial.  Perhaps it lives more than one year, but after it flowers it dies.  Without chlorophyll, the plant is attaches to other species for its food.  Apparently it is not picky as to its host.

One-flowered Broomrape, Ghost PlantOrobanche uniflora – is a mysterious species of an odd family. Scientists don’t even know if it is an annual or perennial. Perhaps it lives more than one year, but after it flowers it dies. It is unclear what pollinates it, or if it pollinates itself.  Without chlorophyll, the plant attaches to other species for its food. Apparently it is not picky as to its host plants. It is a rare species in several states.

There is much more to see, but only so much time to write.  Hopefully, this posting will provide incentive for you to go and see for yourself what is in bloom.  We appreciate your photos (between 500k to 2-3 mb–please not larger) and any identification questions or pointers of where to see them–tetonplants.org.  We can post them too!

Frances Clark, Wilson, WY

Late August blooms still coming in the Tetons

A_BTNF_TabMt_3VwFlBowl_81614_1Q1fixwebOne is continually surprised by how many new plants are coming into bloom: in high meadows, along wetlands, sage flats, and roadside edges.   Many of them are “composites” or members of the aster, daisy, or sunflower family: Asteraceae.  Many are yellow, others- mostly “asters”- are blue, and some you may not know are in bloom at all: sagebrushes.  A few other unrelated odd species pop up as well, such as elegant gentians and inelegant broomrape.  Below are a few wildflowers that you might notice on your hikes and drives around the valley.  Plus a quiz plant!

Yellow Composites:

Western ConeflowerRudbeckia occidentalis – The purplish brown cone-shaped receptacle never looks quite in bloom until you notice the bees working them over.

Western Coneflower - tiny flowers attract bee pollinators.

Western Coneflower – tiny flowers attract bee pollinators.

Looking closely, you may see a row or two of tiny “disc” flowers with pollen being pushed up.  They start blooming at the base and gradually continue row by row up to the tip.  These 5’ plants with large 6-8”, rough, oval leaves are found in moist meadows.

Curly Cup GumweedGrindelia squarrosa – A relative newcomer to Jackson Hole from its surrounding native range, it has now migrated in along dry roadside edges, mostly in the south end of the valley.   GrinSqu_fllv_NER_81714_2crpWebLook carefully at the bases of each head to see the distinctive bracts curling back from the center.

The curly sticky bracts give the plant its name: Curly Cup Gumweed.

The curly resinous bracts give the plant its name: Curly Cup Gumweed.

These one-of-a kind heads are very resinous: sticky and pungent.  The 1”  leaves are toothed, and often clasp the stems.  Sage grouse chicks 5-8 weeks old relish gumweed in Montana, and maybe here as well?

Showy GoldeneyeViguiria multiflora – Also found along roadsides and trails in the sun to partial shade, these cheerful 1-3’ high plants catch your eye.  Flowers are borne loosely atop wiry stems.

ViquMult_flhab_2OL_8814_2crpWeb

Showy Goldeneye catches attention along roadsides and trails with its cheerful flowers and tidy opposite leaves.

The 2”-3” long, neat, oval leaves with pinnate veins are held opposite each other.  The flower heads are surrounded by tidy rounded bracts, and you may notice the 8-10, broad, petal-like ray flowers are slightly darker toward the center.  In bee vision, this slight change in hue creates a bull’s-eye pattern.  Pollinators have a perfect landing pad from which to gather nectar and honey.

Parry's or Rayless Arnica is the odd-ball of the popular Arnica genus.  It has no sunny ray flowers, only disc flowers.

Parry’s or Rayless Arnica is the odd-ball of the popular Arnica genus. It has no sunny ray flowers, only disc flowers.

Parry’s/Rayless ArnicaArnica parryi – This odd-ball arnica grows 1-2’ tall on the edges of high meadows and coniferous forests.  Unlike its sunflower-like cousins, this species has rusty yellow flower heads with disc flowers only bunched together in 1” heads.  However, the bracts beneath are all the same size;  the leaves, although small, are opposite each other in 2-4 pairs on the stem; and the seeds will have fluffy parachutes (pappus)—all typical of Arnica.  This plant is sticky hairy.

Several yellow composite shrubs brighten sageflats.  This is Rabbitbrush.

Several yellow composite shrubs brighten sageflats. This is Rubber Rabbitbrush – Chrysothamnus nauseosus.

Three sunny composite shrubs: Three shrubs add yellow splashes and swaths of color along roadsides, sage flats, and disturbed, dry habitats. Their genus names have been debated for years as the scientists sort out who is related to whom.  Each species has several varieties, further indicating a range of often confusing characteristics.

Rubber RabbitbrushEricameria/Chrysothamnus nauseosa – This 3-4-foot shrub adds panache to the grey-green hues of sagebrush habitats.  The broad, rounded crown is colored by many narrow flower-heads clustered  together on the ends of upright woody branches.  The very narrow long leaves (1/8” wide to 4+” long) stick out from a grayish, furry stems (tomentose).  The twigs have a milky latex sap which gives it its name.

Rabbitbrush has felt-like gray hairs on the stem and long, flattish leaves, as well as bright yellow flowers.

Rubber Rabbitbrush has dense felt-like gray hairs on the stem and long, flattish leaves, as well as bright yellow flowers. Look for butterflies nectaring on these profuse flower heads.

Douglas RabbitbrushChrysothamnus visidiflorus – Similar at first glance to Rubber Rabbitbrush and sometimes placed in the same genus, this shrub differs in being generally shorter 1-2’ shrubs; green, not gray, hairy young stems; and 2-3” oblong, usually twisted leaves which are a bit sticky (viscid).

Douglas Rabbitbrush has bunches of yellow flowers at the ends of brittle, greenish stems.

Douglas Rabbitbrush has bunches of yellow flowers at the ends of brittle, greenish stems.

The leaves of Douglas Rabbitbrush are usually twisted, and the stems are not densely gray hairy.

The leaves of Douglas Rabbitbrush are usually twisted, and the stems are hairy, but not felt-like.

Hairy Golden AsterHeterotheca/Haplopappus/Chrysopsis villosa – The lowest growing of the three late-summer blooming shrubs, this somewhat woody species grows  6-12 ” in dry disturbed sites and road edges, often with blue Pacific aster.  The leaves are hairy and slightly wavy, only about ½-1” long.  The ½” flowers are a soft yellow.  This genus remains a muddle taxonomically.HaplVilp_habfl_TNPrd_81514_3Q2crpweb

The genus for Golden Aster has been in dispute.  Two rows of pappus hairs is one clue.  Yikes!

The genus for Hairy Golden Aster has been in dispute. Two rows of pappus hairs is one clue. Yikes!

Blue to White Aster-like flowers:  Taxonomically Aster is no longer Aster as scientists around the world have shared and refined their knowledge of this confusing group of plants.  The Europeans claim the old Aster name.  Our genus “Aster” is split now into several new groups with hard to spell and pronounce names.  Below are the common names (still aster) listed with the new botanical names.  Differences are based on growing habit, flower-head bracts, obscure pappus hairs, and invisible DNA.  Luckily, some kinds are quite easy to tell apart once you look. Pollinators of aster flowers are typically bees and butterflies.

Thickstem AsterEurybia integrifolia – Common in meadows, these 1.5-2’ plants have thick, often purplish-red stems coated with sticky hairs. Stems branch mostly near the top, holding out deep-violet flower clusters.  Each flower-head has loose, leaf-like bracts that are also very sticky.  The glandular hairs form a gluey forest that deters small insects from creeping up the stems to lay their eggs in the larder of fattening seeds.  The oval leaves clasp the upper stem, the lower leaves can be petioled.

The stems of Thickstem aster are not only thick, but also sticky.  A forest of glandular hairs deter crawling insects from laying eggs in the developing seeds.

The stems of Thickstem Aster are not only thick, but also sticky. A forest of glandular hairs deters crawling insects from laying eggs in the developing seeds heads.

Chaffy AstersEucephalus sp. The three Wyoming species of Chaffy Aster typically sport a few upright stems which are trimmed bottom to top with many alternating, oval to elongate leaves. The plants branch like candle-arbors near the top where a few sparse flowers are arrayed.  Flower-heads have relatively few (6-12) showy ray flowers.  The receptacle is elongate, covered with 3 rows of broad, dry (chaffy), triangular bracts arranged like shingles on a roof.  These three species are often found growing among one another.

Nuttall AsterEucephalus elegans (Aster pereglans) –This species is the shortest and most elegant of the three, averaging 1-1.5’ or so.  The flower-heads display 5-7 violet-purple ray flowers.  The tightly arranged bracts are hairy, especially around the edges, and are often traced with purple. The oblong 2” leaves are neatly arranged up the stem.

Flowers of Nuttall's Aster exhibit fine features of the genus: the broad bracts in several rows, and a few ray flowers.

Flowers of Nuttall’s Aster exhibit fine features of the genus: the broad bracts in several rows and only a few ray flowers.

EuceEleg_habfl_PhiPs_8914_1Q2web

The leaves of Nuttall’s Aster, as with other members of the genus, alternate up the whole stem, gradually becoming smaller.

Engelmann’s AsterEucephalus engelmannii –This  aster stands up to 3-5’ tall and tends to lean out from the shade of forest edges or above other robust meadow plants.  The large bright white, slightly ragged flower-heads cluster near the tips of the sparse branches. The straight stems are covered with many 3-4” oblong leaves.

Engelmann's Aster is the largest of the three chaffy asters.

Engelmann’s Aster is the largest of the three chaffy asters.

For comparison:  Engelmann's Aster left, Nuttall's Aster right.

For comparison: Engelmann’s Aster left, Nuttall’s Aster right.

Blue-leaf AsterEucephalus glaucus – Look for colonies of 1-2’ stems covered with gray-blue leaves. The flowers are white to pale lavender and the bracts are pale, smooth, and thin-textured. The overall appearance is rather ghostly.  It lurks in relatively dry and high, often sunny, locations.

Blue-leaf Aster has a ghostly appearance on rocky high elevations.

Blue-leaf Aster has a ghostly appearance on rocky high elevations.

American Asters – Symphyotricum spp. – There are several truly aster-like asters that now have an impossible botanical name: Symphyotrichum (Sim-fee-o-trick-em).  In case you really want to know, here are three (out of about 7) common showy species:

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Pacific Aster is the most common aster: it tolerates a wide range of conditions and ranges greatly in height, but it always has lots of flowers!

Pacific AsterSymphyotrichum ascendens –One of the most common and tolerant asters, Pacific aster  started blooming a few weeks ago and continues to do so along roadsides: from 6” where it may have been mowed or grazed, to 2+ feet where there is extra moisture.  The light blue flower-heads grow along much of the stem.  The bracts on the underside are shorter at the base and longer on the inside (ascending).  The leaves are elongate and if you look closely, the venation is elongate too—these characteristics help us know it for sure.

The leaf of Pacific Aster has elongate venation and is a key to identification.

The leaf of Pacific Aster has elongate venation: a key to identification.

Another key to ID of Pacific Aster are the bracts:  the lower ones are definitely shorter the the upper ones.

Another key to ID of Pacific Aster are the bracts: the lower ones are definitely shorter the the upper ones.

Bracted AsterSymphyotrichum eatonii – Found on stream edges with wet feet, this 2-4’ aster can at first be confused with Leafy Aster (below) as the blue flower heads have leafy bracts.  However, the leaves of Bracted Aster are narrow and long ( >7x longer than wide), and the habitat is definitely wet.  Flowers cover much of the plant and the stem is usually slightly hairy all over.

Bracted Aster is found along streamsides and wet meadows.  Note the long leaves and many flowers along the stem.

Bracted Aster is found along streamsides and wet meadows. Note the long leaves and many flowers along the stem.

Bracted Aster also has leafy bracts, which can be confused with the species below: Leafy Aster.  ID depends on several clues.

Bracted Aster also has leafy bracts, which can be confused with the species below: Leafy Aster. ID depends on several clues.

Leafy AsterSymphyotrichum foliaceum – Just coming into bloom in moist meadows, near streams, and high elevations, this aster has broad oval leaves that often clasp the stem and several blue flower-heads with many ray flowers, which together create quite a show.  Looking under the flower-head you can see the leaf-like bracts that give it its name.  There are several varieties with different details of leaves, bracts, etc., but just “Leafy Aster” is fine.

Bracted Aster usually has leaf-like bracts and long broad leaves.

Leafy Aster usually has leaf-like bracts and long broad leaves.

Sagebrush Artemisia spp.  –  Many people don’t realize that our common sagebrushes are wind pollinated members of the Aster family: they don’t have showy flowers but rather produce pollen in tiny composite heads with no ray flowers and only a few disc flowers.

This Low Sage plant is in full bloom - not showy as it is wind pollinated

This Low Sagebrush plant is in full bloom at Lupine Meadows.  It is not showy as it is wind pollinated.

Low SagebrushArtemisia arbuscula –  A 1’ shrub that dominates Lupine Meadows in the park is now in bloom: 6-8” narrow stalks with tiny flower heads, each with about a dozen disc flowers, wave like wands and shed pollen to the wind—magic that any pollen meets a stigma surface to initiate seed formation.  Its 1/4-1/2″  leaves have 3 lobes–like Big Sagebrush – held close to tough woody stems.

The composite flowers of Low Sagebrush are tiny.

The composite flowers of Low Sagebrush are tiny.

Soon our Mountain Big Sagebrush – Artimesia tridentata var. vaseyana — will wave about pollen too.

In full flower: Mountain Big Sagebrush

In full flower: Mountain Big Sagebrush.  You can see the curved stigmas of the flowers, ready to catch the falling pollen.

And other special plants:

Naked BroomrapeOrobanche uniflora – Rare to find, this peculiar plant has no chlorophyll but rather depends on its roots to connect it to other living plants for food.  Saxifrages, sunflowers, and goldenrods are often its “host” plants.

This weird rare plant, broomrape, does not have chlorophyll, it connects to other host plants for food.

This weird rare plant, Broomrape, does not have chlorophyll, it connects to other host plants for food.

Mountain Bog Gentian –Gentiana calycosa. – These deep blue, 6-8” plants with egg-shaped, opposite leaves unfurl their pleated petals to attract late flying pollinators such as bumble bees. Look for it blooming at high elevations .

Mountain Bog Gentian graces high elevations with its pleated, speckled blue flowers.

Mountain Bog Gentian graces high elevations with its unfurling, speckled, blue flowers.

What is this?What is this?*

Quiz plant*:  This is the flower of a tall plant that is considered the harbinger of autumn.  It colonizes abundantly after  ____, a behavior that gives it its name. Answer below.

Enjoy hiking higher to see more showy blooms or looking closely with a hand lens at many wind pollinated plants.  And don’t forget to look for fruits: berries, pods, capsules, etc. Fall is coming!

Lupines, groundsels, Indian paintbrush are now blooming over 9000'.

Lupines, groundsels, Indian paintbrush are now blooming over 9000′.

Frances Clark, Wilson, WY

*Quiz answer: Fireweed – Chamerion/Epilobium angustifolium – The 8 anthers open sequentially releasing pollen. Pollen grains are linked by microscopic hairs which become entangled in the hairs of its bee pollinators.  These same micro-strings attach readily to the 4-parted stigma which has little bumps. In each flower, the anthers develop first, then the 4-lobed stigma expands, to avoid self-pollination.  The plants bloom from bottom to top.

Conservation Notes: Thistles in Teton County

Those of us in the Wyoming Native Plant Society are interested not only in natives, but invasives, for they can be destructive, as we know. However, it seems that many people believe that any thistle is by definition a weed. Not so. We have both native thistles and noxious weeds here, and this post intended to help everyone know the difference.

Plant keys and guides help identify thistles with technical details, but a broad-brush way to tell the so-called good from bad thistles involves things you can see immediately. All the species of native thistles are covered in white hairs that give them a gray or silvery appearance. Elk thistle (Cirsium scariosum) is distinguished by having a single leafy stem 3 feet tall and a cluster of pale flowers near the top.

Elk thistle, showing growth habit of one main stem and flower cluster at top.

Elk thistle, Cirsium scariosum, showing growth habit of one main stem and flower cluster at top.

Flowerhead of the elk thistle, Cirsium scariosum.

Flowerhead of the elk thistle, Cirsium scariosum.

Our other mid-elevation native species, Teton thistle (Cirsium subniveum), is also grayish in appearance, but it has branches coming off the main stem, each with one to several showy flowers that range from pale to a more intense violet. They are usually around 2-3 feet tall. If you look at the base of the leaves, especially at the lower part of the stem, they are strongly decurrent, as if pasted to the stem for as much as an inch.

Teton (Jackson Hole) thistle, Cirsium subniveum.

Teton (Jackson Hole) thistle, Cirsium subniveum.

Tweedy’s thistle (Cirsium tweedyii or C. eatonii), an alpine species, is similar in appearance to Teton thistle, and also has branches and decurrent stem leaves, but is only seen above around 9,000 feet. Look for it above Tower 3 on the Rendezvous Mountain road.

Tweedy’s thistle, Cirsium tweedyii.

Tweedy’s thistle, Cirsium tweedyii or C. eatonii.

These native thistle species are found with other forbs and grasses and rarely dominate. In newly disturbed sites, where their airborne seeds can take hold, they can be pioneer species, but as other plants colonize the disturbance, they take their place as an occasional plant among the wide variety of natives. Deer and elk favor the young growth and flowers, and pollinators of all kinds visit the many disk flowers. Seeds are eaten by birds and small rodents.

The most common non-native thistles do not appear gray or silvery. The plants have hairs, but they still look mostly dark green. Canada thistle (Cirsium arvense) grows in clumps, has narrow stems and leaves, and clusters of small purple flowers. Usually found in moist places, it can reach 3 feet. This patch, in a recently vacated sheep grazing allotment, is the only green thing left after the sheep have left in fall. A few years later, mountain brome and bluebell are becoming lush and keeping the thistle contained.

Canada thistle flowers, Cirsium arvense.

Canada thistle flowers, Cirsium arvense.

Canada thistle flowers, Cirsium arvense

Canada thistle flowers, Cirsium arvense

Musk thistle (Carduus nutans) is the largest of the weeds, with flowering stems reaching 6 – 8 feet. It has a thick-leaved, robust base and a stout stem that branches near the top. Its deep-magenta flowers can be more than an inch wide.

Musk thistle, Carduus nutans.

Musk thistle, Carduus nutans.

Bull thistle (Cirsium vulgare) is less widespread, and more silvery looking, than other weedy thistles. It is branching, kind of like Teton thistle, but the habit is more upright and it has stiff bristly stem leaves that are not decurrent. The calyx is tall and vase-shaped, whereas the calyx of the Teton thistle appears more rounded.

Bull thistle, Cirsium vulgare.

Bull thistle, Cirsium vulgare.

The photo below shows a patch of bull thistle gone to seed – an impressive number of parachute seeds that can take off in the wind and colonize disturbed areas deep into the backcountry.

Bull thistle, Cirsium vulgare, gone to seed.

Bull thistle, Cirsium vulgare, gone to seed.

A few recommended do’s and don’ts for anyone interested in helping reduce these weeds:
• Let Teton County Weed and Pest know if you find an infestation, especially of musk thistle. UTM (GPS) coordinates nice to have if in the backcountry. Weed and Pest will send crews to spray if needed.
• If you see someone pulling native thistles, let them know these aren’t weeds.
• Do pull musk thistle if so inclined (thick gloves recommended!). They have tap roots so they can be pulled. However, if they are in bloom it does no good to leave them lying there. The blooms will mature and go to seed. Before they bloom they can be pulled and left.
• Don’t pull thistles unless you’re sure of the identity.
• Don’t try to pull Canada thistle. It has underground rhizomes and cutting them will only stimulate growth.

TC Weed and Pest (www.tcweed.org) is a good resource for identifying weeds, thistles or otherwise.

Susan Marsh, Jackson, WY

Late July Wildflowers in Jackson Hole

The sage flats are subtly colorful, mostly with yellow, cream, and rose hues of persistent and pervasive sulphur buckwheat flowers and fruits (Eriogonum umbellatum varieties). Lupines still flourish, sage is extending its silvery flower stalks, and the grasses wave gracefully in the breeze.   For fresh blooms and splashy color you have to go higher and higher.

Walk through the meadows up to Ski Lake, and beyond.

Walk through the meadows up to Ski Lake, and beyond to find flowers.

Cool canyons and high meadow slopes feature floral bouquets.   What we think of as spring flowers: Spring beauties (Claytonia lanceolata) may be blooming in recently melted snow patches.  On dry slopes, late summer bloomers may be out already, such as Engelmann Aster (Eucephalus engelmannii).  On any given slope, flowers will mix in different combinations of pink sticky geranium, red to yellow paintbrushes, blue lupines and asters, lavender erigerons, yellow sunflowers, white columbines, to name a very few!

Mid-elevation hikes are good for botanizing.  Trails south from Teton Pass and north to Ski Lake exhibit extraordinary diversity of bloom.

A_BTNF_PassTrMid_Flws_71714_2crpWebMoose-Wilson Road and hikes to Phelps Lake are also great right now.  You may want to visit Goodwin Lake, Two Ocean Lake, and other mid elevations at the north end of the valley as well.  This list does not include the incredible alpine and subalpine flowers found at 9,500’ and above.

Keep scrolling down to discover what is in bloom now and to identify what you may have already found.  Also reference past “what’s in bloom” pages:

Longtime Favorites:

Colorado or White ColumbineAquilegia coerulea  var. ochroleuca– The delicate “talons” or spur-like petals extend 2” beyond the rounded sepals (which look like petals) and contain nectar for long-tongued pollinators: hummingbirds and hawkmoths.A_AquCoe_flb_GraCanTr_62912_1crpWeb

Not to be confused with the lemon-yellow to bluish color Yellow Columbine (Aquilegia flavescens) which flexes shorter, stubbier spurs.  Long-tongued bees are more likely pollinators.A_AquFla_flCU_SawTmtUT_8911_4crpWeb

Harebell Campanula rotundifolia – The dangling blue bells are long-time favorites of locals, blooming from mid summer to the end of autumn.

Harebell - a longtime favorite

Harebell – a longtime favorite

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The leaves at the base are more or less round, but the stem leaves are linear in Harebell.

Paintbrushes – Castilleja spp.  These members of the Snapdragon family have complex flowers. Often the fused petals (galea) hide amidst colorful sepals and bracts. The species often hybridize or double their chromosomes, making it difficult to identify the species precisely.  For instance, color can be highly variable. Below are samples of the more obvious and beautiful, common species.

Wyoming PaintbrushCastilleja liniarifolia – The state flower inhabits sagebrush habitat and dry slopes.  Unlike many other paintbrushes, the “galea”, the beak of fused petals, is green and sticks out well beyond the tube of colorful orange-red sepals which split deeply on the back. Colorful forked linear bracts (leaf-like structures) are held beneath each flower adding to the show.  Alternating down the 2-foot stem, the leaves are thin and often forked.  The plants have a wild, lean elegance.

Wyoming Paintbrush - our state flower

Wyoming Paintbrush – our state flower. Note the stigma sticking out beyond the flower, ready for pollen borne on the heads of hummingbirds.  The green galea leans out beyond the colorful calyx tube.

Other paintbrushes in the mountains include the Scarlet Paintbrush –  Castilleja miniata.  Stems  are up to 3’ high.  Colors vary from pink, to salmon, to whitish to scarlet.

Scarlet Paintbrush is highly variable in its color.

Scarlet Paintbrush is highly variable in its color. Note the leaves and bracts are not lobed.  The green galea of fused petals is almost hidden by the colorful sepals and bracts.

Also look for the very similar, shorter Alpine PaintbrushC. rhexifolia – in subalpine to alpine locations. The bracts are slightly lobed at their tips.  Distinction by color, unfortunately, is in the eye of the beholder.

Note the lobed tips of this species.

Note the lobed tips of the bracts and leaves of Alpine Paintbrush, which otherwise looks a lot like Scarlet Paintbrush (above).

Sulphur PaintbrushCastilleja sulphurea –  The “galea” barely pokes out beyond the sepals and bracts which are both usually pale  yellow (but there are color variations!) with many long, often sticky hairs.  The leaves, like the bracts, are usually more or less entire, not divided.

Sulphur Paintbrush can grow in clusters.

Sulphur Paintbrush can grow in multi-stemmed clusters.

Mountain BluebellsMertensia ciliata – The sky-blue flower clusters drip over mountain streams at this time of year.  This is the only bluebell species of this large 3-4’ size.

Mountain Bluebells is often along streams or wet meadows.

Mountain Bluebell often grows along streams or in wet meadows.

Western SweetvetchHedysarum occidentalis   – The violet pea-shaped flowers dangle in stiff racemes above 1’ foliage.  Look for the flattened fruits that hang down in chains later in the summer.

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Note the “keel” and “banner” of Western Sweetvetch are longer than the side “wings” of the pea-like flowers.  The green calyx of fused sepals at the base of the petals has uneven teeth–looking like a scoop.

Standouts:

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Mountain Hollyhock is in cool canyons and long sunny roadsides.

Wild HollyhockIlliamna rivularis – stands out along sunny dry roadsides as well as in shady canyons.  The 4-6’ plants are hard to miss with their large lobed leaves and lavender to pink hollyhock-like flowers.

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Look inside the 1.5” petals of Mountain Hollyhock: dozens of anthers form a tube and down inside are 5 separate styles with nobs on their ends (capitate).  The 1” fruits look like very hairy wheels of cheese.  Each section (carpel) encloses 2 or more seeds. These features make it different than your garden Hollyhock (Malva sp).

Pinedrops – Pterospora andromeda – One- to four-foot singular stalks grow in dry coniferous woods.  The rusty red stems have no green leaves.  Instead of photosynthesizing, the plant roots are surrounded by mychorrhizal fungi that draw upon another unknown host for carbohydrates to benefit the pinedrops.  Much is still mysterious about this species.

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The dangling bell shaped flowers of Pinedrops will each produce a dry capsule containing 1000s of tiny seeds, easily scattered by wind deep into the duff to co-join with fungal threads.

Western LarkspurDelphinium occidentalis – Growing 5-6 feet in moist meadows, this plant has complicated flowers perfect for specific bee pollinators to puzzle out.  The smart bee’s reward is nectar at the end of the “spur”.

The tall Western Larkspur presents interesting puzzles to pollinators.

The tall Western Larkspur presents interesting puzzles to pollinators.

Aster Family – Asteraceae:

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This flower head of balsamroot shows the ray flowers on the outside and smaller upright disc flowers clustered on the inside–each will produce a fruit. Note the fuzzy bracts surrounding the whole.  So each flower head can have many, many flowers, hence the old family name Compositae

The Aster Family is one of the largest plant families in the world.  The basic plan of several tiny flowers sitting on a receptacle making each cluster or “head” look like a single flower is universal.  However, the variation in “involucral bracts” surrounding the “head”; the receptacle shape; outer and inner flower types—ray vs. disc; color; pappus -bristles or scales; seed shape and size are technical aspects that place  “asters”,  “ daisies”, and “sunflowers” into different genera.  Common names add to the confusion.  Regardless, it is fun to investigate the plants:  Can you see similarities and differences between flowers?  Pollinators know which is which, if not by name.

Subaplpine Erigeron – Erigeron peregrinus – Flower heads are usually one per stem and the petal-like rays are 2-4 mm wide (relatively broad), usually bluish lavender.  Plants can grow 2+ feet tall.  The upper leaves may or may not be reduced.

Single heads with broad blue ray flowers are typical of Erigeron peregrinus.

Single heads with broad, blue petal-like ray flowers are typical of Subalpine Erigeron.

Oregon Erigeron – Erigeron speciosus – Rays .5-.2 mm., narrower and more plentiful (75-150)  than Subalpine Erigeron.   Each stem may have 1-10 flowers.   Upper leaves are gradually reduced and usually egg-shaped (ovate), the lower leaves are more elongate.  Leaves are typically smooth with some stiff hairs along the margin (ciliate).

Erigerons have many small rays.

Oregon Erigeron has  several flower heads with many small rays, egg-shaped leaves near the top, and longer leaves with side hairs near the bottom of 2-2.5′ plants.

Little Sunflowers or HelianthellasHelianthella spp.– This genus has sunflower-like heads, e.g. yellow petal-like ray flowers around the outside, and small disc flowers on the inside.  The large elliptical leaves are arranged opposite near the base to sub-opposite higher on the stem. Leaves are sandpapery rough.  Unlike dandelions, the “pappus” is scale-like, not fluff-like. This genus has flattened achenes (frutis) with thin edges vs. not flattened of a true sunflower (Helianthus sp. –think of the sunflowers seeds you shell and eat!).

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Five-nerved Helianthella – Helianthella quinquenervis – stands up tall to 4 1/2’, and stares straight at you. The lower leaves may be 1’ long, with 5 obvious nerves. Basal leaves may be present. Flower heads are 3-5” across, solitary or with a few smaller below.  The bracts on the back are broadly triangular and often have hairs along the outer edges.  Found in moist woods in the mountains.

One-flowered Helianthella - Helianthella uniflora - is shorter 2-3' tall, and more demure in its posture.  Lower leaves have 3-veins,  Flower are 2-3" across and the bracts are narrowly triangular.

One-flowered HelianthellaHelianthella uniflora – is shorter 2-3′ tall, and more demure in its posture. Lower leaves have 3-veins, Flower are 2-3″ across and the bracts are narrowly triangular. It grows in sage flats and up relatively dry slopes.

Groundsels  – Senecio spp. – This genus has yellow ray flowers plus disc flowers.  The involucral surrounding each flower head is made up of one row of narrow, equal bracts, like a palisade fence. (Occasionally, a few smaller bracts can be seen at base.)  The plants are typically smooth or cobwebby, never rough with stiff hairs as in look-alike sunflowers or sticky-hairy as in arnicas.   The silvery white pappus (fluff) gives it its Latin name Senecio meaning  “old man”.  The following three species are large, leafy, and common in the appropriate habitat.

groundsels have a single row of even-sized bracts surrounding the flower heads.  This is Thick-leaved Groundsel or Senecio.  

Groundsels have a single row of even-sized bracts surrounding the flower heads. This is Thick-leaved Groundsel or Senecio.

Toothed Senecio or Butterweed GroundselSenecio serra – The large leaves are linear or lanceolate, with pointed tips.  The margins are saw-toothed.  Plants grow to 4-5 feet, with multi-branching, rounded clusters of flowers.   Common in meadows along open areas of Moose-Wilson Road and elsewhere.

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Butterweed grows in large colonies along Moose-Wilson Road.

Thick-leaf or Bracted SenecioSenecio crassulus – Smaller than the Toothed Senecio, this species is approx 2’-3 tall, with thickish leaves often rounded near the base.  They alternate up stem.  Edges smooth (entire) or with very small teeth.  Involucral bracts are thickened, waxy, with black tips.  Seen in high elevation meadows.

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Thick-stemmed groundsel height varies but can be 4′ tall in moist areas. The leaves are usually toothed, often broad at base and clasping the stem.

Arrow-leaf SenecioSenecio triangularis – Leaves several up the stem to 2-6” long, elongate, obviously triangular and toothed. Found in wet areas such as seeps, stream-sides, and wet meadows. (no photo)

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Goldenrods do not cause hayfever. The pollen is too heavy to be carried by wind.

Goldenrods – First, goldenrods are not the cause of hay fever.  Their pollen is way too heavy to be tossed on the wind and up your nostrils.  Strong bees and flies are needed to carry pollen, it is so heavy.  These pollinators are attracted to the yellow clusters of flowers.  Look closely.  The flower heads are tiny: 1/8-1/4” wide.   Each of these flower heads has both yellow ray and disc flowers.  Often these tiny flower heads are arranged along one side of the branching inflorescence.  Leaves are simple, alternate, smooth edged or slightly toothed.  Low growing species — less than a foot or so –typically have basal clusters of leaves and then small leaves which reduce in size up the stem. Tall growing species typically have many, mostly same sized, leaves up the stem, and no basal leaves.

Rocky Mountain or Low GoldenrodSolidago  multiradiata – About 1-1.5’ tall, these tufted plants are often wedged into rocks or along sides of trails.  Look for approx. 13+ ray flowers per head and ciliate hairs along the petioles of basal leaves.

Low Goldenrod has "bursts" of flowers at the top, each head with many tiny ray flowers.

Low Goldenrod has “bursts” of flowers at the top, each head with many tiny ray flowers.

Canada Goldenrod – Solidago canadensis – 2-3+’ tall stems with leaves of similar size.  Canada goldenrod has pointed, 2-4” leaves with sharp teeth and three strong veins.  The tiny flowers are arranged along one side of the arching flower stems.  The plant is finely rough hairy along much of its stem.

Canada Goldenrod can look a bit like a tall groundsel, but the individual flowers are tiny.

Canada Goldenrod can look a bit like a tall groundsel, but the individual yellow flower heads are tiny.

Parsley/Carrot family – Apiaceae.

This family used to be called the Umbelliferae because the tiny flower are arranged at the ends of umbrella-like ribs—e.g. stalks arising from a central point.  Each flower has 5-tiny petals and an interesting fruit that splits in two called a schizocarp.   These fruits can be the key to identification and are fun to compare.

Cow parsnip Haracleum spondyleum – This floral giant is hard to miss in moist areas and aspen groves: the flat flower clusters are the size of dinner plates.  The inch thick stems are bristly hairy and the huge compound leaves are divided into three broad leaflets each with 3 pointed lobes.  Overall the plants can be 4-5’+ tall.A_HeraSpon_flhab_MWrd_7113_2crpWeb

Fern-leaf Lovage – Ligusticum filicinum – The white flower clusters are salad-plate size and are held 1-2’ above large finely dissected leaves—reminiscent of giant carrot leaves.   Fruits will be 1/4″ oblong schizocarps.LiguFili_habfl_TetPsTr_7413_1crpfxweb

Fernleaf Lomatium/Spring Parsley – Lomatium dissectumRemember the large pale yellow spring parsley with fern-like leaves, similar to lovage,  that bloomed in spring?  Most of the plant has dried up, but the fruits are held up at eye height on umbrella ribs to disperse by wind or bird.A_LomaDiss_fr_PhlLkTr_72114_1aWeb

Sweet Cicely or Western Sweetroot – Osmorhiza occidentalis – This 3’ species is the largest of three local members of this genus.  Note few “umbrella” ribs compared to some other members of this family.  The tiny yellow-green flowers have turned into inch-long, elongate, smooth fruits that taste a bit like licorice or anise.

The elongate fruits of western sweetcicely have a tangy, anise flavor.

The elongate fruits of western sweet cicely have a tangy, anise flavor.

Two other species can be hard to distinguish as both have elongate fruits with downward pointed hairs. Both are be found in shady, moist locations. Again it is just fun to observe and taste the differences!

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Note the stiff hairs, sharp tip of the fruit of this Sweet Cicely. The fruit will split and stick to clothes and fur.

Sweet CicelyO. berteroi/chiliensis – Flowers borne on approx 1.5 feet stalks which may stretch to 4’ high in fruit.  The narrow, pointed fruits with stiff hairs attach to hikers and wildlife for dispersal.

 Bluntseed SweetrootO. depauperata – 10” or less tall with elongate, club-shaped fruit with a blunt tip held on wide spreading stalks.

Depauperate Sweet Cicely is most delicate.  The club-shaped fruits are held at wide angles.

Bluntseed Sweetroot is most delicate. The club-shaped fruit with blunt ends are held at wide angles.

Common Yampa –  Perideridia montana – Look for the tiered lacey white inflorescences 3-4” wide just beginning to bloom in sage flats and meadows.   The leaves are very skimpy: only 1-3 on the 1-2’ bluish gray stems, each with maybe 4-5 pairs of linear leaflets that fizzel quickly.  The swollen roots are relished by bears and other wildlife.

Yampa root is cherished by bears, ground squirrels and even people.

Yampa root is cherished by bears, ground squirrels and even people.

These are just a few wildflowers you may find while out hiking mid-summer.  It is fun to try to recognize a plant family and compare its members’ flowers and fruits.  Slowly, the plant varieties will become familiar friends, and with practice you may remember their names!  In any case, you have had a good “conversation”.

Frances Clark, Wilson, WY

Note: Measurements are approximate.  Using the scientific names you can look up precise details and more about each species.  Also, there may be other look-alikes than are compared here.

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Mid-May Blooms 2014

Wildflowers are coming out in earnest as aspen leaves expand in the southern half of Jackson Hole. Dry slopes and sage flats are good spots to look for color:Josie’s Ridge, Cache Creek, High School Butte, the edges of the Elk Refuge Road in Jackson and areas along the Gros Ventre Road in Grand Teton National Park are easy to access. There are several very distinctive species easy to identify, and a few that can be confounding even to the professional botanists. They are all intriguing to look at close up.

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Pasque Flower (Anemone patens var. multifida) is a local favorite. Several large bluish sepals, not petals, form the 2” cup-shaped flower and wrap warmth. Many yellow anthers fill the center, appealing to early pollinators.  Leaves are divided and “fuzzy”. Silky hairs likely warm the plants by reducing wind and holding the sun’s heat as these plants emerge on breezy slopes.

Kittentails (Besseya wyomingensis) are a treat to find. Kittentails - Besseya wyomingensis The “flower” is actually a group of tiny flowers set on a central stalk creating a “spike”.  Each flower has only two sepals, no petals, and two stamens with purple-blue filaments and anthers, which provide the overall color.  Leaves are gray wooly, with rounded teeth. Plants flower at 3-4” but stretch to 12” over the season.

 

 

Spring Beauty  (Claytonia lanceolata) – These delicate ephemerals  grow fast from tiny corms (like crocus).  One pair of elliptical leaves grow opposite each othClayLan_fllv_JosRdg_2614_1crp180smer on the 4-6” stems, just beneath the flowers.  Several white to pinkish flowers open wide with rose pink lines on the 5 petals converging to gleaming nectar glands in the center.  The whole plant will die back within only a few weeks, as ephemeral as these lovely spring days.

 

 

CommUmbe_flCU_RKOrd_61413_1crp180smBastard Toadflax (Comandra umbellata) is the only member of the Sandlewood Family in Wyoming and can be parasitic on surrounding plants.  The bluish green, 6-8” plants support clusters of tiny, slightly waxy flowers with 5 whitish sepals (no petals).  Sometimes the plants look bright yellow from a fungus.  Bastard Toadflax is an alternate host of the Comandra Blister Rust that infects lodgepole pine.

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Spring  Parsley:  At least two genera and several species of the Parsley Family confound botanists at this time of year. They are all called Spring, sometimes Desert, Parsley.  ID is confirmed by looking at roots and fruits—which are not available.  Here are two Spring Parslies to look out for:

Longstalk Spring Parsley – (Cymopteris longipes) CymoLonp_habfl_kws_42614_3Q1_crpsmSilvery gray, divided leaves form what appears to be a lacy basal rosette, with a pale yellow set of umbels arising from the center.  However, later in the season, the stalk stretches to 8” below and above the set of leaves—giving it a very different look.  The final division of the umbels has a delicate whorl of bractlets: tiny leaf-like structures, that form the  “involucel”.   This species is common on very dry slopes.

LomaFoen_flhab_GVJct_5314_1crp180smSpring Parsley (Lomatium cf. foeniculaceum) — Note the deep green, lacy leaves, and reddish stalk.  The flowers are bright yellow with a definite whorl of wide bractlets forming the involucel.  These are abundant now along the outwash flats along  Gros Ventre Road near the junction with the highway.  ID needs to be confirmed come summer when the fruits are ripe.

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Shooting Stars (Dodecatheon conjugens) dangle their DodeConj_habfl_JosRdg_2614_1crp180smmagenta flowers.  These elegant flowers depend upon bumble bees for pollination.  Hanging upside down, bees vibrate their wings at a certain frequency which releases pollen on the belly of the bee (buzz pollination).  The bee flies to another flower where the stigma is exerted, and the pollen sticks.

 

 

 

 

MertObl_FlCU_JosRdg_2614_2acrp180smOblongleaf Bluebells – (Mertensia oblongifolia/viridis—these are now one species) – This spring flowering bluebell grows only to about 10” high.  Flowers are arranged in curled clusters (cymes) and change from deep pink to sky blue.   The narrow tube flares out into a more open portion of the flower (limb).  Inside, the filament of the anther joins at this junction, and is quite broad. The 5 anthers project just beyond the flower opening.  MertObl_FlDis_JosRdg_2614_1crp180smThese details distinguish this species from other local species, including a summer species Mountain Bluebells (M. ciliata) which is much larger plant found in wet seeps.

 

 

Hood’s Phlox (Phlox hoodii) – Low mats of white to pale blue flowers spread across dry hills and flats.  The tiny tubular flowers are sweetly fragrant.  This species is distinguished by the ½”-wide floPhlHoo_flhab_AntFl_KWS_42714_1crp180smwers and the dense, needle-like leaves often with cobwebby hairs and pungent odor.  Other similar species P. multiflora and P. pulvinata will soon be out with larger 1” wide flowers.

 

 

ViolNutt_fl_JosieRidge_fl52011_1crp180smYellow Violets typically have basal leaves ranging from heart-shaped to lance-shaped.   Yellow flowers arise on stalks from the center.  Several  species can be confounding: Viola nuttallii , V. praemorsa,  and V. vallicola.  I think this is Nuttall’s Yellow Violet given the size of the plant and flower  and shape and dimension of the leaves, but I am not sure.  So we may leave it as Yellow Violet (Viola sp.)

While names help you share your experiences or look up more information, just examining flower details and watching pollinators can be delightful.

Have fun flower watching!

Frances Clark, Wilson, WY