Astragalus panamintensis

E. Sheldon

Contr. U.S. Natl. Herb. 4: 87. 1893.

Common names: Panamint milkvetch
Endemic
Treatment appears in FNA Volume 11.

Plants 5–18 cm, silvery-canescent; from branched cau­dex, branches intricate, usually with sparse thatch of marcescent petioles. Stems erect or ascend­ing, internodes elongate or not, usually white-strigulose. Leaves (1.5–)2–12 cm; stipules 1–3(–4) mm, herbaceous becoming papery; leaflet blades linear-elliptic or subulate, 2–12(–14) mm, apex acute and apiculate, surfaces silvery-canescent. Peduncles ascending, (0.5–)1–6(–8) cm. Racemes 1–4(–6)-flowered; axis (0–)1.5–3.5 cm in fruit; bracts 0.8–2 mm; bracteoles 0. Pedicels 1–2.5 mm. Flowers 8.2–14 mm; calyx 4.6–8.5 mm, strigulose, tube (2.7–)3–4.6 mm, lobes lanceolate- to linear-subulate, 1.5–4.4 mm; corolla pink-purple, banner with white in middle, wing tips white, keel maculate; keel 6.6–8.7 mm. Legumes pale green and purple spotted becoming stramineous, slightly decurved or ± straight, bluntly 3-sided compressed, 8–18 × (2.3–)3.4–4.7 mm, thin becoming papery, densely strigulose.


Phenology: Flowering Apr–Jun.
Habitat: Forming mats on ledges and crevices in limestone outcrops and talus, less commonly in canyon bottoms.
Elevation: (1000–)1200–2200 m.

Distribution

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Calif.

Discussion

Astragalus panamintensis is restricted to the moun­tains of Inyo County. The leaflets appear to be early deciduous, falling more or less synchronously with the fruits.

Selected References

None.

Lower Taxa

None.
... more about "Astragalus panamintensis"
Stanley L. Welsh +
E. Sheldon +
Panamint milkvetch +
- 1000–1200–2200 m. +
Forming mats on ledges and crevices in limestone outcrops and talus, less commonly in canyon bottoms. +
Flowering Apr–Jun. +
Contr. U.S. Natl. Herb. +
Papilionoideae de +
Astragalus panamintensis +
Astragalus sect. Panamintenses +
species +