Flora of North America species comparison

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Astragalus convallarius var. scopulorum
Photo is of parent taxon

lesser rushy milkvetch, Rocky Mountain milkvetch
Stems

20–50 cm.
Leaflets

3–13 proximally, some distal leaves reduced to naked rachis or with at most 1 pair of filiform leaflets, blades 2–25(–33) mm.
Pedicels

0.6–2.3 mm.
Flowers

(6.6–)8.1–11.2 mm;

calyx 4–6.3 mm, tube (3.5–)3.8–5.4 mm, lobes 0.5–1.1 mm.
Legumes

oblanceoloid, 20–35 × 2.3–4 mm, tapering downward into calyx from obliquely triangular apex.
Seeds

11–17.
Bracteoles

0–2.

Astragalus convallarius var. scopulorum
Phenology Flowering May–Jul.
Habitat Sagebrush, oak, and pinyon-juniper communities.
Elevation 1700–2500 m. (5600–8200 ft.)
Distribution
from FNA
CO
[BONAP county map]
Discussion

Variety scopulorum is mostly from the valleys of the Grand and Gunnison rivers in west-central Colorado. It differs from var. convallarius primarily in the fruits that taper from obliquely triangular apices to the narrower bases at the calyces.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Genistoidei > Astragalus convallarius
Sibling taxa
A. convallarius var. convallarius, A. convallarius var. finitimus, A. convallarius var. margaretiae
Name authority Barneby: Leafl. W. Bot. 5: 30. (1947)
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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