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Photo is of parent taxon

Canyonlands kentrophyta, Colorado spiny milkvetch

Photo is of parent taxon

spiny milkvetch

Habit Plants loosely mat- or clump-forming, low, to 12 cm. Plants decumbent, loosely mat-forming.
Stems

and herbage strigulose, hairs malpighian.

and herbage strigulose, hairs basifixed or obscurely malpighian.

Leaves

0.9–2.4 cm;

stipules 1–12 mm;

leaflets (3 or)5(or 7), blades 4–15 mm, surfaces pubescent.

(0.7–)1–2.5 cm;

stipules dimorphic, those at proximal nodes connate into short, bidentate sheath, those at distal nodes longer, connate at base only, lanceolate or lanceolate-acuminate, often without spines, 2–7 mm;

leaflets 5 or 7, blades 7–12 mm, surfaces pubescent abaxially, glabrous or glabrescent adaxially.

Peduncles

0.2–0.6 cm.

subobsolete to 0.2 cm.

Flowers

7.3–10 mm;

calyx 6–8.3 mm, tube 2.4–3.3 mm, lobes subulate, spinulose, 3.4–5 mm;

corolla pink-purple.

4–5.5 mm;

calyx 3.4–4 mm, tube 1.9–2.4 mm, lobes subulate to setaceous, 1.4–2 mm;

corolla whitish.

Legumes

subsymmetrically ellipsoid, lanceoloid- or oblong-ellipsoid, (5–)7–10 × 2.8–4 mm.

subsymmetrically ovoid-lenticular, (3.5–)4–7 × 2.4–3.8 mm.

Seeds

4–8.

2 or 3(or 4).

2n

= 24.

= 24.

Astragalus kentrophyta var. coloradoensis

Astragalus kentrophyta var. kentrophyta

Phenology Flowering Apr–Jun. Flowering Jun–Sep.
Habitat Sandy wash bottoms, sandy pockets on sandstone rimrock, in mixed desert shrub communities. Bluffs, dunes, gullied ridges in badlands.
Elevation 900–1700 m. (3000–5600 ft.) 1200–1600 m. (3900–5200 ft.)
Distribution
from FNA
AZ; UT
[BONAP county map]
from FNA
CO; MT; ND; NE; SD; WY; AB; SK
[BONAP county map]
Discussion

Variety coloradoensis is known from north-central Arizona and south-central Utah.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety kentrophyta is a taxon of the High Plains from southeastern Alberta and southwestern Saskatchewan through eastern Montana, Wyoming and Colorado, the western Dakotas, and western Nebraska.

(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. 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. ungulatus
A. kentrophyta var. coloradoensis, A. kentrophyta var. danaus, A. kentrophyta var. douglasii, A. kentrophyta var. elatus, A. kentrophyta var. jessiae, A. kentrophyta var. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
Name authority M. E. Jones: Contr. W. Bot. 10: 63. (1902) unknown
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