Astragalus miser var. serotinus
Astragalus miser var. tenuifolius
Cooper's weedy milkvetch, timber milk-vetch, weedy milk-vetch
Garrett's weedy milkvetch, timber milkvetch
strigulose, hairs basifixed.
strigose, hairs basifixed.
10–35 cm.
1–11(–15) cm.
4–15(–17.5) cm;
leaflets (9 or)11–19(or 21), blades narrowly elliptic to linear or linear-oblanceolate, (2–)4–30(–40) mm, apex acute or obtuse, surfaces pubescent abaxially, glabrous adaxially.
(1.5–)2.5–9(–10.5) cm;
leaflets (3–)7–11, blades linear, narrowly linear-elliptic, or (distally) filiform-subulate, 2–10(–20) mm, apex sharply acute, surfaces pubescent or glabrescent.
loosely (3–)6–16(–24)-flowered;
axis (1.5–)2.5–14 cm in fruit.
3–6(–12)-flowered;
axis 1–5(–7.5) cm in fruit.
calyx 3–4.2 mm, tube 2.3–3.1 mm, lobes 0.7–1.3 mm;
corolla whitish or suffused or veined purple, keel pinkish lilac;
banner 7–9.5 mm;
keel 6–7.8(–8.4) mm.
calyx 2.4–3.5 mm, tube 1.9–2.5 mm, lobes 0.5–1.1 mm;
corolla usually whitish or suffused, rarely ochroleucous;
banner 6–8 mm;
keel 5.9–7 mm.
linear-oblong, 13–18(–21) × 2–2.8(–3.2) mm, glabrous or strigulose.
linear (in profile), 12–16 × 2–2.7 mm, strigulose.
7–10.
8–12.
= 22.
Astragalus miser var. serotinus
Astragalus miser var. tenuifolius
Variety serotinus is known from the Columbia Basin in Washington, northward into British Columbia and Rocky Mountains of Alberta, and southward into northwestern Montana.
D. Isely (1998) noted that var. serotinus is contiguous, and blends, with the purple-petaled var. miser. If origin is unknown, var. serotinus is often distinguished from var. hylophilus with difficulty.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Variety tenuifolius is most abundant in eastern Idaho with a range that extends into southwestern Montana, western Wyoming, northeastern Nevada, and northern Utah.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CalFlora
