Flora of North America species comparison

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Astragalus kentrophyta var. kentrophyta
Photo is of parent taxon

spiny milkvetch
Habit Plants decumbent, loosely mat-forming.
Stems

and herbage strigulose, hairs basifixed or obscurely malpighian.
Leaves

(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

subobsolete to 0.2 cm.
Flowers

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

2 or 3(or 4).
2n

= 24.

Astragalus kentrophyta var. kentrophyta
Phenology Flowering Jun–Sep.
Habitat Bluffs, dunes, gullied ridges in badlands.
Elevation 1200–1600 m. (3900–5200 ft.)
Distribution
from FNA
CO; MT; ND; NE; SD; WY; AB; SK
[BONAP county map]
Discussion

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.
Parent taxa 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. neomexicanus, A. kentrophyta var. tegetarius, A. kentrophyta var. ungulatus
Name authority unknown
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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