familyFabaceae
subfamilyFabaceae subfam. Faboideae
genusAstragalus
sectionAstragalus sect. Argophylli
speciesAstragalus newberryi
Astragalus newberryi var. newberryi
Leaflets 3–13(or 15). Flowers: calyx cylindric, 11–14.5 mm, tube 9.5–11.5 mm, lobes 1.5–4 mm; corolla banner 21.5–32 mm. 2n = 22.
Phenology: Flowering Apr–Jun.
Habitat: Sagebrush, rabbitbrush, matchweed, pinyon-juniper, shadscale, galleta communities.
Elevation: (600–)1300–2000 m.
Distribution
Ariz., Colo., N.Mex., Utah.
Discussion
Variety newberryi occurs in northern and central Arizona (extending southwestward to Yavapai County), southwestern Colorado (Montezuma County), northwestern New Mexico (McKinley and San Juan counties), and southeastern Utah (Garfield, Kane, and San Juan counties).
Plants described as var. escalantinus typically have narrowly elliptic (not ovate to elliptic-obovate) leaflets, differing in no other way from var. newberryi. Occasional intermediates are known. The range of the phase with narrow leaflets is contiguous, and partially sympatric, with that of var. newberryi.
Selected References
None.
Lower Taxa
None.