Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Astragalus kentrophyta var. douglasii

Astragalus kentrophyta var. danaus
Photo is of parent taxon

Douglas kentrophyta, Douglas' spiny milkvetch, spiny millk-vetch, thistle milk-vetch
Photo is of parent taxon

Mount Dana kentrophyta, spiny milkvetch, Sweetwater Mountains. milk vetch
Habit Plants prostrate, densely mat-forming, becoming suffruticose. Plants prostrate, mat- or cushion-forming, to 15 cm wide.
Stems

and herbage strigulose, hairs basifixed.

and herbage strigulose, hairs basifixed.
Leaves

1–1.7 cm;

stipules dimorphic, 2–5 mm;

leaflets 5(or 7), blades 5–12 mm, surfaces pubescent.

0.4–1.5(–2) cm;

stipules somewhat dimorphic, 2–7 mm;

leaflets 3(–7), blades 3–7 mm.
Peduncles

subobsolete.

0.2–0.6 cm.
Flowers

5.8 mm;

calyx 4.7–5.2 mm, tube 2.2–2.4 mm, lobes subulate, spinulose, 2.3–3 mm;

corolla whitish.

4–5.6 mm;

calyx 2.4–3.2 mm, tube 1.6–1.9 mm, lobes subulate to setaceous, 0.8–1.3 mm;

corolla purple or whitish and keel purple.
Legumes

lanceoloid, 5–5.5 × 2 mm.

subsymmetrically lenticular, 3.5–5 × 2–2.5 mm.
Seeds

2.

5–8.
2n

= 24.

= 24.

Astragalus kentrophyta var. douglasii

Astragalus kentrophyta var. danaus
Phenology Flowering Jun. Flowering Jul–Sep.
Habitat Sandy substrates. Gravelly slopes and talus upward from timberline, or in bristle-cone pine forest.
Elevation 150–400 m. (500–1300 ft.) 3000–4000 m. (9800–13100 ft.)
Distribution
from FNA
OR; WA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Variety douglasii is known from only a few, vague historical records, probably taken near the present city of Walla Walla near the Great Bend of the Columbia River, and appears to be extinct.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety danaus is restricted to high elevations in the southern Sierra Nevada.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Ervoidei > Astragalus kentrophyta Fabaceae > subfam. Faboideae > Astragalus > sect. Ervoidei > Astragalus kentrophyta
Sibling taxa
A. kentrophyta var. coloradoensis, A. kentrophyta var. danaus, A. kentrophyta var. elatus, A. kentrophyta var. jessiae, A. kentrophyta var. kentrophyta, A. kentrophyta var. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
A. kentrophyta var. coloradoensis, A. kentrophyta var. douglasii, A. kentrophyta var. elatus, A. kentrophyta var. jessiae, A. kentrophyta var. kentrophyta, A. kentrophyta var. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
Synonyms A. tegetarius var. danaus
Name authority Barneby: Mem. New York Bot. Gard. 13: 364. (1964) (Barneby) Barneby: Leafl. W. Bot. 6: 154. (1951)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers