COLORADO WESTERN TIER WILDFLOWERS

 Jim Fuchs

Plant Spreadsheet

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If you prefer, organized by  Name or Plant Feature


Astragalus (Fabaceae) - Purple Flowered

Click for white Astragalus

Astragalus amphioxys var. vespertinus

I have seen this astragalus in bloom every month of the year. Flower stalks are somewhat decumbent. Has dolabriform hair (attached near the middle). Might be confused with an unusually less hirsute Astragalus mollissimus var. thompsoniae which has basifixed hair (attached at the base) and more upright flower stalks. The fruit (someday I will get a photo of it) is not nearly as hirsute as Astragalus mollissimus var. thompsoniae.

Astragalus

Astragalus amphioxys var. vespertinus

Astragalus

Flower stalks often prostrate

Astragalus

Astragalus amphioxys var. vespertinus

Astragalus asclepiadoides

Astragalus

Astragalus asclepiadoides

Astragalus

Astragalus asclepiadoides with purple flowers

Astragalus

Astragalus asclepiadoides with white flowers

Astragalus

Astragalus asclepiadoides

Astragalus

Astragalus asclepiadoides

Astragalus

Astragalus asclepiadoides

Astragalus desperatus var. desperatus

When I first saw these I thought that they were A. naturitensis, that is, until I saw some pods. Closer inspection revealed that the flower stalk arose from a 1 cm stem. Common in the Colorado National Monument below red rock cliffs. Smaller flowers than variety neeseae (below).

Astragalus

Astragalus desperatus var. desperatus

Astragalus

Older flowers

Astragalus

Astragalus desperatus var. desperatus

Astragalus

Spreading hairs

Astragalus

Astragalus desperatus var. desperatus

Astragalus

Pods on erect stalks

Astragalus

Astragalus desperatus var. desperatus

Astragalus desperatus var. neeseae

Larger flowers than variety desperatus. Unfortunately I did not see this plant in situ. Not sure of this ID - no mottling on pods but it could be that they are not mature enough.

Astragalus

Astragalus desperatus var. neeseae

Astragalus

Astragalus desperatus var. neeseae

Astragalus

Astragalus desperatus var. neeseae

Astragalus

Astragalus desperatus var. neeseae

Astragalus duchesnensis

When not flowering, Astragalus duchesnensis looks similar to Astragalus convallarius (which has white flowers). You will see more branches than leaves on either plant. A. duchesnensis has larger leaflets and the distinct zig-zag stems will often lie perfectly flat.

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus

Astragalus duchesnensis

Astragalus lentiginosus var. chartaceus

Astragalus

Astragalus lentiginosus var. chartaceus

Astragalus

Astragalus lentiginosus var. chartaceus

Astragalus

Astragalus lentiginosus var. chartaceus

Astragalus

Astragalus lentiginosus var. chartaceus

Astragalus lentiginosus var. palans

Astragalus

Astragalus lentiginosus var. palans

Astragalus

Red calyx

Astragalus

Astragalus lentiginosus var. palans

Astragalus

Astragalus lentiginosus var. palans

Astragalus

Glabrous leaves

Astragalus

Astragalus lentiginosus var. palans

Astragalus mollissimus var. thompsoniae

This plant has an overall light cast because of its long basifixed hairs. Might be easily confused with an unusually hirsute Astragalus amphioxys var. vespertinus, but the later has dolabriform hair. The two can be separated easily in fruit because the fruit of Astragalus mollissimus var. thompsoniae is all but obscured by the hair. They are both early bloomers.

Astragalus

Astragalus mollissimus var. thompsoniae

Astragalus

Astragalus mollissimus var. thompsoniae

Astragalus

Astragalus mollissimus var. thompsoniae

Astragalus

Upright flower stalks

Astragalus

Long basifixed hair

Astragalus musiniensis

Astragalus

Astragalus musiniensis

Astragalus

Astragalus musiniensis

Astragalus

Astragalus musiniensis

Astragalus

Astragalus musiniensis

Astragalus naturitensis

Have never seen this perennial growing with A. nuttallianus but I suppose that if it did happen that it could get confusing.

Astragalus

Whitish banner

Astragalus

Astragalus naturitensis

Astragalus

Astragalus naturitensis

Astragalus

Mottled pods are straight until the tip

Astragalus

Astragalus naturitensis

Astragalus

Astragalus naturitensis

Astragalus

Flower petiole arises from base. A. nuttallianus (inset) has petioles arising from farther up a stem.

Astragalus nuttallianus

Usually a typical annual but I have seen this as a winter annual as well. Some years this astragalus is abundant and some years it can't be found.

Astragalus

Purple banner with conspicuous white spot

Astragalus

Astragalus nuttallianus

Astragalus

Astragalus nuttallianus

Astragalus

Astragalus nuttallianus

Astragalus

Very little mottling on this red, very curved, pod

Astragalus

Astragalus nuttallianus

Astragalus

Prostrate flower stalks

Astragalus

Astragalus nuttallianus

Astragalus spatulatus

Astragalus

Astragalus spatulatus

Astragalus

Astragalus spatulatus

Astragalus

Astragalus spatulatus

Astragalus

Astragalus spatulatus

Astragalus

Astragalus spatulatus

Astragalus

Grows here but more commonly on non-rocky ground

Astragalus

Lots of plants found in Rio Blanco County

Astragalus

Another flower photo

Astragalus wingatanus

This perennial plant is much taller and more robust than A. nuttallianus.

Astragalus

White spot on banner

Astragalus

White wings

Astragalus

Astragalus wingatanus

Astragalus

Erect flower stalks

Astragalus

Astragalus wingatanus

Astragalus

Straight pods

Astragalus

Astragalus wingatanus

Click for white Astragalus