Flora of North America species comparison

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Astragalus kentrophyta var. tegetarius
Photo is of parent taxon

mat milk vetch, mountain kentrophyta
Habit Plants prostrate, cushion-forming, 5–40(–50) cm wide.
Stems

and herbage densely to sparsely strigulose, villosulous, or villous, hairs basifixed.
Leaves

(0.2–)0.4–1.5(–2) cm;

stipules 2–7 mm;

leaflets (3 or)5–9, blades 1–9 mm, surfaces pubescent or adaxially glabrous or medially glabrescent.
Peduncles

0–1.5(–3) cm.
Flowers

(3.9–)4.5–8(–9.2) mm;

calyx (2–)2.4–5.7(–7) mm, tube 1.2–2.6(–2.8) mm, lobes subulate to setaceous, (0.5–)1.9–2.6(–4.2) mm;

corolla usually purple or purplish, sometimes white and keel tip pink or purplish.
Legumes

ellipsoid or oblong-ellipsoid, (3–)4–8(–9) × (0.6–)2–2.5 mm.
Seeds

(3–)5–8.
2n

= 24.

Astragalus kentrophyta var. tegetarius
Phenology Flowering Jun–Sep.
Habitat Ridgetops, breaks, alpine shrub and tundra with Phlox, Geum rossii, other forbs, grasses, less commonly with shrubs and trees, often in barrens.
Elevation 2000–3700 m. (6600–12100 ft.)
Distribution
from FNA
CA; CO; ID; MT; NM; NV; OR; UT; WY
[BONAP county map]
Discussion

The moderately large, usually purplish flowers borne just above the mat of foliage set var. tegetarius apart and make it one of the showiest phases of the species.

(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. kentrophyta, A. kentrophyta var. neomexicanus, A. kentrophyta var. ungulatus
Synonyms A. tegetarius, A. aculeatus, A. kentrophyta subsp. implexus, A. kentrophyta var. implexus, A. kentrophyta var. rotundus, A. montanus var. rotundus, A. montanus var. tegetarius, A. tegetarius var. implexus, A. tegetarius var. rotundus, Homalobus aculeatus, H. tegetarius, H. wolfii, Kentrophyta aculeata, K. minima, K. rotunda, K. tegetaria, K. wolfii, Tragacantha tegetaria
Name authority (S. Watson) Dorn: Vasc. Pl. Wyoming, 297. (1988)
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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