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Photo is of parent taxon

prostrate milkvetch, reclining weedy milkvetch

Photo is of parent taxon

Jones' weedy milkvetch, timber milkvetch

Herbage

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

villosulous or villous and pilosulous, hairs obscurely malpighian, gray or silvery, mostly twisted and loose.

Stems

1–15(–22) cm.

2.5–15 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.

1.5–8 cm;

leaflets (9 or)11–17, blades narrowly elliptic or oblong-elliptic, 3–16(–20) mm, apex acute or shortly acuminate, surfaces pubescent;

terminal leaflet decurrent or obscurely jointed.

Racemes

(4–)7–17-flowered;

axis 1–3(–4) cm in fruit.

9–17-flowered;

axis 2–5.5 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.

calyx 3.7–4.7 mm, tube 2.4–2.8 mm, lobes 1.1–2.4 mm;

corolla whitish or ochroleucous, sometimes faintly lavender-tinged or -veined;

banner 9.2–10.4 mm;

keel 7.7–8.3 mm.

Legumes

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

linear-oblong, 14–17 × 2.5–3 mm, minutely villosulous, hairs twisted.

Seeds

12–18.

6–13.

Astragalus miser var. decumbens

Astragalus miser var. crispatus

Phenology Flowering May–Aug. Flowering Jun–Aug.
Habitat Banks, hillsides, bluffs, ridge crests, with sagebrush, with limber pine and juniper. Pine woodlands, sagebrush flats.
Elevation 1100–2600 m. (3600–8500 ft.) 1200–1300 m. (3900–4300 ft.)
Distribution
from FNA
ID; MT; WY
[BONAP county map]
from FNA
ID; MT
[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.)

Variety crispatus is among the most restricted of the varieties in the species, occurring only in the Bitterroot Mountains, in east-central Idaho and adjoining Montana. It is geographically peripheral to var. tenuifolius, and some plants intergrade.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Genistoidei > Astragalus miser 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
A. miser var. decumbens, 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 A. campestris var. crispatus
Name authority (Nuttall) Cronquist: Leafl. W. Bot. 7: 18. (1953) (M. E. Jones) Cronquist: Leafl. W. Bot. 7: 18. (1953)
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