Astragalus kentrophyta var. douglasii
Astragalus kentrophyta var. elatus
Douglas kentrophyta, Douglas' spiny milkvetch, spiny millk-vetch, thistle milk-vetch
spiny leaf milk vetch, tall kentrophyta, tall spiny milkvetch
and herbage strigulose, hairs basifixed.
and herbage strigulose, hairs malpighian.
1–1.7 cm;
stipules dimorphic, 2–5 mm;
leaflets 5(or 7), blades 5–12 mm, surfaces pubescent.
(0.8–)1–2.6 cm;
stipules dimorphic, those at proximal nodes connate with bidentate tip, those at distal nodes connate near base with spiny tips, 1–12 mm;
leaflets (3 or)5 or 7, blades (2–)5–15(–17) mm, surfaces usually pubescent, sometimes glabrous adaxially.
subobsolete.
0.1–0.6 cm.
5.8 mm;
calyx 4.7–5.2 mm, tube 2.2–2.4 mm, lobes subulate, spinulose, 2.3–3 mm;
corolla whitish.
4.8–6.2 mm;
calyx 3.4–4.4 mm, tube 1.8–2.3 mm, lobes subulate, spinulose, 1.5–2.4 mm;
corolla usually whitish or faintly veined or tinged purple, fading ochroleucous, rarely pink-purple.
lanceoloid, 5–5.5 × 2 mm.
narrowly ovoid-acuminate, (3.5–)4–7 × 1.5–2 mm.
2.
2–4.
= 24.
= 24.
Astragalus kentrophyta var. douglasii
Astragalus kentrophyta var. elatus
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.)
Both erect and prostrate phases are known, which at maturity form ascending or sprawling tangles of untidy, branched stems with prickly leaves, hence an alternative common name of barb-wire kentrophyta. The prostrate phases, typically from upper-middle elevations, simulate var. tegetarius, which has basifixed hairs.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
