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Astragalus bisulcatus var. major

Astragalus bisulcatus (Hook.) A. Gray var. major (M.E. Jones) S.L. Welsh

Twogrooved Milkvetch

Fabaceae (Pea family)

Synonym(s): Astragalus haylenianus var. major

USDA Symbol: ASBIM

USDA Native Status: L48 (N)

"Subdecumbent or nearly erect; leaflets 7 to 9 pairs, narrowly elliptical to linear-lanceolate, very obtuse, apiculate; whole plant nearly glabrous, but pods more pubescent and pedicels villous; bracts narrowly lanceolate, acuminate, longer than the pedicels; calyx deeply cleft, 1-1/2 lines wide and long, exclusive of the lobes, with scattered black hairs and black-ciliate throat; lobes with a deltoid base and 1-1/2 lines long or less; flowers 6 lines long, cream-white; banner ascending; claws of wings conspicuous; flowers twice as narrow as A. bisulcatus; pods spreading but seldom pendent, narrowly oblong-elliptical, rugulose-veiny, straight, or generally curved, 5 lines long by 1-1/2 lines wide, shortly acute at both ends, ventral groove not so deep and the dorsal also a little impressed.." (reslit: 2893).

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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate
Fruit Type: Legume
Leaf: "(13) 15-35 leaflets obtuse or rarely acute tips." (webref: 54).
Flower: "Flowers ochroleucous or whitish, the keel often purple-tipped; calyx ochroleucous, whitish, or greenish; flowers 10-18 mm long." (reslit: 2894).
Fruit: "Body of pod 10-17 mm long, smooth or faintly reticulate." (reslit: 2894). "Pod deflexed, body of the pod dorsiventrally compressed, 9-19 mm long, 1-chambered." (webref: 54).

Bloom Information

Bloom Color: White , Yellow , Green , Purple
Bloom Time: Jun
Bloom Notes: "Flowers ochroleucous or whitish, the keel often purple-tipped; calyx ochroleucous, whitish, or greenish." (reslit: 2894).

Distribution

USA: AZ , CO , UT , WY
Native Distribution: "In Beaver, Garfield, Juab, Kane, Rich, Sanpete, Sevier, and Washington cos.; Wyoming, Colorado, and Arizona." (reslit: 2894).
Native Habitat: "Pinyon-juniper, sagebrush, mountain brush, and salt desert shrub at 1530 to 2300 m elevation; plants usually not montane." (reslit: 2894).

Web Reference

Webref 54 - Status of Trelease�s racemose milkvetch (Astragalus racemosus Pursh var. treleasei Porter) in Wyoming (2003) Wyoming Natural Diversity Database University of Wyoming

Research Literature

Reslit 2893 - New Species and Notes of Utah Plants (1891) Jones, Marcus E.

This information was provided by the Florida WIldflower Foundation.
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Additional resources

USDA: Find Astragalus bisulcatus var. major in USDA Plants
FNA: Find Astragalus bisulcatus var. major in the Flora of North America (if available)
Google: Search Google for Astragalus bisulcatus var. major

Metadata

Record Modified: 2020-12-07
Research By: Joseph A. Marcus

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