Flora of North America species comparison

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Astragalus miser var. decumbens
Photo is of parent taxon

prostrate milkvetch, reclining weedy milkvetch
Herbage

strigulose, hairs obscurely malpighian, silvery-silky, ± straight.
Stems

1–15(–22) cm.
Leaves

1.5–9(–12) cm;

leaflets (7 or)9–15(or 17), blades narrowly elliptic to oval-lanceolate, leaflets subtending racemes more broadly elliptic or oblanceolate, (2–)4–16(–20) mm, apex acute to obtuse, surfaces pubescent;

terminal leaflet decurrent or jointed.
Racemes

(4–)7–17-flowered;

axis 1–3(–4) cm in fruit.
Flowers

calyx 2.8–4.3 mm, tube 1.8–2.5 mm, lobes 0.9–1.9 mm;

corolla usually pink-purple, purplish, bluish, or dull purple, sometimes pallid or whitish, except maculate keel;

banner 6.9–9.6 mm;

keel 6.2–7.8 mm.
Legumes

linear-oblong or -oblanceoloid, (12–)14–21 × 2.2–3.3 mm.
Seeds

12–18.

Astragalus miser var. decumbens
Phenology Flowering May–Aug.
Habitat Banks, hillsides, bluffs, ridge crests, with sagebrush, with limber pine and juniper.
Elevation 1100–2600 m. (3600–8500 ft.)
Distribution
from FNA
ID; MT; WY
[BONAP county map]
Discussion

Variety decumbens occurs from southern Montana on the Yellowstone River, southward (mostly eastward of the Continental Divide except on upper Green River) to central Wyoming.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Genistoidei > Astragalus miser
Sibling taxa
A. miser var. crispatus, A. miser var. hylophilus, A. miser var. miser, A. miser var. oblongifolius, A. miser var. praeteritus, A. miser var. serotinus, A. miser var. tenuifolius
Synonyms Homalobus decumbens
Name authority (Nuttall) Cronquist: Leafl. W. Bot. 7: 18. (1953)
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).



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