Astragalus kentrophyta var. neomexicanus
Astragalus kentrophyta var. elatus
New Mexican kentrophyta, New Mexico spiny milkvetch
spiny leaf milk vetch, tall kentrophyta, tall spiny milkvetch
and herbage strigulose, hairs malpighian.
and herbage strigulose, hairs malpighian.
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.
(0.8–)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.
0.1–0.3 cm.
0.1–0.6 cm.
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.
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.
obliquely ovoid, 3–4 × 1.8–2.4 mm.
narrowly ovoid-acuminate, (3.5–)4–7 × 1.5–2 mm.
2 or 3.
2–4.
= 24.
= 24.
Astragalus kentrophyta var. neomexicanus
Astragalus kentrophyta var. elatus
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.)
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.)
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