Astragalus sabulosus
Plants robust, clump-forming, 13–38 cm, strigulose; from superficial, woody caudex. Stems decumbent to ascending or erect, strigulose. Leaves 3–10.5 cm; stipules 4–9 mm; leaflets 5–11, blades flat, rhombic-oval to obovate or elliptic, 6–35(–50) mm, apex mucronate, surfaces strigose or glabrous. Peduncles incurved, 3.5–7 cm. Racemes 4–10-flowered, flowers ascending-spreading; axis 0.5–2 cm in fruit; bracts 2–6 mm; bracteoles 0–2. Pedicels 2–5 mm. Flowers 23–34 mm; calyx 12–17.5 mm, strigulose, tube 11–14 mm, lobes subulate, 2–4 mm; corolla ochroleucous (fading yellowish), or white (fading off-white); banner recurved through 40°; keel 22–23 mm, apex blunt. Legumes spreading to declined, pallid-stramineous or brownish, straight or slightly incurved, cylindroid, inflated, 20–48 × 9–15 mm, moderately fleshy-thickened, becoming stiffly papery to leathery, strigose; unilocular; subsessile or substipitate. Seeds 55–59.
Distribution
Utah.
Discussion
Varieties 2 (2 in the flora).
Astragalus sabulosus is a primary selenium indicator.
Selected References
None.
Key
| 1 | Corollas ochroleucous, fading yellowish, banners 27–34 mm; Cisco-Thompson vicinity, Grand County, Utah. | Astragalus sabulosus var. sabulosus |
| 1 | Corollas white or pink, fading off-white, banners 23–27 mm; northwest of Moab, Grand County, Utah. | Astragalus sabulosus var. vehiculus |