Astragalus geyeri var. triquetrus (A. Gray) M.E. Jones
Fabaceae
W. E. Niles (1995-05-17)
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W. E. Niles
4119
1995-05-17
May,17,1995
P. J. Leary
United States, Arizona, Mohave County, Sand Hollow Wash, 10.7 miles (by road) north of Interstate Highway 15; ca. 0.4 mi E of the NV-AZ state line; N of road and mainly beneath powerlines.
36.95234 -114.043663
UTM: 11 763240 4093670; T41N R16W S16
732 meters
2400 ft.
Common on Yucca brevifolia-dominated knolls and adjacent SE-facing slopes.
Surface of deep, loose sand with scattered light-colored gravel.
Ephedra torreyana, Larrea tridentata, and Ambrosia dumosa, Stipa hymenoides, A. lentiginosus, A. amphioxys, A. sabulonum, Pediomelum castoreum, Lupinus flavoculatus.