Astragalus kentrophyta var. elatus
Astragalus kentrophyta var. neomexicanus
spiny leaf milk vetch, tall kentrophyta, tall spiny milkvetch
New Mexican kentrophyta, New Mexico spiny milkvetch
and herbage strigulose, hairs malpighian.
and herbage strigulose, hairs malpighian.
(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.
0.8–2.2 cm;
stipules uniform, connate to 1/2 their length, 1–1.5(–2.5) mm;
leaflets usually 5, blades 3–13 mm.
0.1–0.6 cm.
0.1–0.3 cm.
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.
4.8–5.2 mm;
calyx 2.4–3.3 mm, tube 1.8–2.1 mm, lobes subulate, spinulose, 0.7–1.5 mm;
corolla whitish.
narrowly ovoid-acuminate, (3.5–)4–7 × 1.5–2 mm.
obliquely ovoid, 3–4 × 1.8–2.4 mm.
2–4.
2 or 3.
= 24.
= 24.
Astragalus kentrophyta var. elatus
Astragalus kentrophyta var. neomexicanus
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.)
Variety neomexicanus is predominantly of the northwestern quarter of New Mexico, with outlying populations along the drainage of the Pecos River in De Baca and Chaves counties. Plants from the latter area have somewhat the habit of var. kentrophyta but the pungent leaflets and short calyx lobes of var. neomexicanus.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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