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Photo is of parent taxon

Canyonlands kentrophyta, Colorado spiny milkvetch

Photo is of parent taxon

jessie's kentrophyta, spiny milkvetch

Habit Plants loosely mat- or clump-forming, low, to 12 cm. Plants spreading or prostrate, loosely mat-forming, 5–35 cm wide.
Stems

and herbage strigulose, hairs malpighian.

and herbage strigulose, hairs malpighian.

Leaves

0.9–2.4 cm;

stipules 1–12 mm;

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

1–1.7 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, 1.5–7(–8) mm;

leaflets 5, blades 4–10 mm, surfaces pubescent.

Peduncles

0.2–0.6 cm.

0.1–0.6 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.

5.2–6.5 mm;

calyx 3.6–5.1 mm, tube 1.6–2.5 mm, lobes subulate, spinulose, 1.9–3 mm;

corolla whitish, banner and keel tips sometimes faintly tinged pink or lilac.

Legumes

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

lenticular or ovoid-lenticular, 3–4.5 × 1.4–2 mm.

Seeds

4–8.

2(or 3).

2n

= 24.

= 24.

Astragalus kentrophyta var. coloradoensis

Astragalus kentrophyta var. jessiae

Phenology Flowering Apr–Jun. Flowering Jun–Aug.
Habitat Sandy wash bottoms, sandy pockets on sandstone rimrock, in mixed desert shrub communities. Bluffs, ridges, dunes, sandy sites.
Elevation 900–1700 m. (3000–5600 ft.) 700–2400 m. (2300–7900 ft.)
Distribution
from FNA
AZ; UT
[BONAP county map]
from FNA
ID; OR; UT; WY
[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.)

The distribution of var. jessiae is bicentric: southwestern Idaho and southeastern Oregon, and northeastern Utah and southwestern Wyoming.

(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. kentrophyta, A. kentrophyta var. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
Synonyms A. jessiae
Name authority M. E. Jones: Contr. W. Bot. 10: 63. (1902) (M. Peck) Barneby: Leafl. W. Bot. 6: 154. (1951)
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