Flora of North America species comparison

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Astragalus kentrophyta var. neomexicanus

Astragalus kentrophyta var. douglasii
Photo is of parent taxon

New Mexican kentrophyta, New Mexico spiny milkvetch
Photo is of parent taxon

Douglas kentrophyta, Douglas' spiny milkvetch, spiny millk-vetch, thistle milk-vetch
Habit Plants decumbent and mat- or cushion-forming, or erect and bushy-branched basally, 4–30(–40) cm. Plants prostrate, densely mat-forming, becoming suffruticose.
Stems

and herbage strigulose, hairs malpighian.

and herbage strigulose, hairs basifixed.
Leaves

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.

1–1.7 cm;

stipules dimorphic, 2–5 mm;

leaflets 5(or 7), blades 5–12 mm, surfaces pubescent.
Peduncles

0.1–0.3 cm.

subobsolete.
Flowers

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.

5.8 mm;

calyx 4.7–5.2 mm, tube 2.2–2.4 mm, lobes subulate, spinulose, 2.3–3 mm;

corolla whitish.
Legumes

obliquely ovoid, 3–4 × 1.8–2.4 mm.

lanceoloid, 5–5.5 × 2 mm.
Seeds

2 or 3.

2.
2n

= 24.

= 24.

Astragalus kentrophyta var. neomexicanus

Astragalus kentrophyta var. douglasii
Phenology Flowering Jun–Sep. Flowering Jun.
Habitat Bluffs, badlands, dunes, mixed desert shrub and pinyon-juniper communities. Sandy substrates.
Elevation 1600–2200 m. (5200–7200 ft.) 150–400 m. (500–1300 ft.)
Distribution
from FNA
NM
[BONAP county map]
from FNA
OR; WA
[BONAP county map]
Discussion

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.)

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.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Ervoidei > Astragalus kentrophyta Fabaceae > subfam. Faboideae > Astragalus > sect. Ervoidei > Astragalus kentrophyta
Sibling taxa
A. kentrophyta var. coloradoensis, A. kentrophyta var. danaus, A. kentrophyta var. douglasii, A. kentrophyta var. elatus, A. kentrophyta var. jessiae, A. kentrophyta var. kentrophyta, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
A. kentrophyta var. coloradoensis, A. kentrophyta var. danaus, A. kentrophyta var. elatus, A. kentrophyta var. jessiae, A. kentrophyta var. kentrophyta, A. kentrophyta var. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
Synonyms A. tegetarius var. neomexicanus
Name authority (Barneby) Barneby: Leafl. W. Bot. 6: 154. (1951) Barneby: Mem. New York Bot. Gard. 13: 364. (1964)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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