Astragalus subcinereus var. basalticus |
Astragalus subcinereus var. subcinereus |
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Fremont junction milkvetch |
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Stems | prostrate, 40–90 cm. |
ascending or prostrate, 14–50 cm. |
Flowers | 8.5–11 mm. |
5–9 mm. |
Legumes | ellipsoid to cylindroid-ellipsoid, inflated, length usually more than 2 times width, 3.5–6(–7) mm wide. |
ovoid or ovoid-ellipsoid, bladdery-inflated, length less than 2 times width, relatively broad, usually 6–13 mm wide. |
Astragalus subcinereus var. basalticus |
Astragalus subcinereus var. subcinereus |
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Phenology | Flowering May–Jul. | Flowering May–Sep. |
Habitat | Pinyon-juniper and ponderosa pine communities. | Ponderosa pine, white fir, pinyon-juniper, aspen, and sagebrush communities. |
Elevation | 1400–2400 m. (4600–7900 ft.) | 1600–2600 m. (5200–8500 ft.) |
Distribution |
UT |
AZ; NV; UT |
Discussion | Variety basalticus is confined to western Emery and eastern Sevier counties. Variety basalticus and Astragalus flexuosus var. diehlii are sympatric in the range of var. basalticus. Fruits of var. basalticus are usually wider and the flowers longer. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety subcinereus occurs in Coconino and Mohave counties in Arizona, Lincoln County in Nevada, and Garfield, Kane, and Washington counties in Utah. Much of the material in southern Utah differs from plants in Mohave County, Arizona, in having broader leaflets, longer stems, and more firmly-walled fruits, and has been called Astragalus sileranus var. cariacus. The features are weak and overlapping at best. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. sileranus var. cariacus | |
Name authority | S. L. Welsh: Great Basin Naturalist 38: 302. (1978) | unknown |
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