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Photo is of parent taxon

spiny milkvetch, talon kentrophyta

Photo is of parent taxon

New Mexican kentrophyta, New Mexico spiny milkvetch

Habit Plants prostrate, mat- or cushion-forming, 8–20 cm wide. Plants decumbent and mat- or cushion-forming, or erect and bushy-branched basally, 4–30(–40) cm.
Stems

and herbage strigulose, hairs malpighian.

and herbage strigulose, hairs malpighian.

Leaves

0.5–1.3 cm;

stipules dimorphic, those at proximal nodes connate, those at distal nodes free and ± spine-tipped, 1.5–4 mm;

leaflets (3 or)5, blades 3–9 mm.

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.

Peduncles

0.1–0.4 cm.

0.1–0.3 cm.

Flowers

5.2–6.5 mm;

calyx 3.6–4.7 mm, tube 1.8–2.1 mm, lobes subulate, spinulose, 1.8–2.6 mm;

corolla whitish, keel tip purplish.

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.

Legumes

obliquely lanceoloid-acuminate, 5–7.5 × 1.6–2 mm.

obliquely ovoid, 3–4 × 1.8–2.4 mm.

Seeds

2 or 3(or 4).

2 or 3.

2n

= 24.

= 24.

Astragalus kentrophyta var. ungulatus

Astragalus kentrophyta var. neomexicanus

Phenology Flowering May–Jul. Flowering Jun–Sep.
Habitat Calcareous gravel or gravelly clay knolls and hillsides with sagebrush. Bluffs, badlands, dunes, mixed desert shrub and pinyon-juniper communities.
Elevation 1500–2200(–3000) m. (4900–7200(–9800) ft.) 1600–2200 m. (5200–7200 ft.)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
NM
[BONAP county map]
Discussion

Variety ungulatus contributes to the peculiar pseudo-alpine, mound- and cushion-forming vegetation on the knolls and valley floors and foothills in the high valleys of central and northeastern Nevada and Mono County, California.

(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.)

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. neomexicanus, A. kentrophyta var. tegetarius
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
Synonyms A. tegetarius var. neomexicanus
Name authority M. E. Jones: Proc. Calif. Acad. Sci., ser. 2, 5: 650. (1895) (Barneby) Barneby: Leafl. W. Bot. 6: 154. (1951)
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