familyFabaceae
subfamilyFabaceae subfam. Faboideae
genusAstragalus
sectionAstragalus sect. Inflati
speciesAstragalus geyeri
Difference between revisions of "Astragalus geyeri var. triquetrus"
Contr. W. Bot. 8: 7. 1898.
Common names: Muddy River milkvetch
Endemic
Basionym: Astragalus triquetrus A. Gray Proc. Amer. Acad. Arts 13: 367. 1878
Treatment appears in FNA Volume 11.
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Latest revision as of 18:53, 12 March 2025
Plants annual. Leaflets (5 or)7 or 9, blades broadly oblanceolate or elliptic, 4–15 mm; terminal leaflet not conspicuously longer than last pair. Legumes inflexed as narrow, partial septum 0.6–1.2 mm wide, semibilocular; sutures sulcate dorsally (3-sided). Seeds 7–11.
Phenology: Flowering Apr–May.
Habitat: Sandy flats and washes, with Ambrosia and Larrea.
Elevation: 300–700 m.
Distribution
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Ariz., Nev.
Discussion
Variety triquetrus is a rare and local taxon from extreme northwestern Mohave County, Arizona, and southern Clark County, Nevada.
Selected References
None.
Lower Taxa
None.