Flora of North America species comparison

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Astragalus subcinereus var. subcinereus

Astragalus subcinereus var. basalticus
Photo is of parent taxon
Photo is of parent taxon

Fremont junction milkvetch
Stems

ascending or prostrate, 14–50 cm.

prostrate, 40–90 cm.
Flowers

5–9 mm.

8.5–11 mm.
Legumes

ovoid or ovoid-ellipsoid, bladdery-inflated, length less than 2 times width, relatively broad, usually 6–13 mm wide.

ellipsoid to cylindroid-ellipsoid, inflated, length usually more than 2 times width, 3.5–6(–7) mm wide.

Astragalus subcinereus var. subcinereus

Astragalus subcinereus var. basalticus
Phenology Flowering May–Sep. Flowering May–Jul.
Habitat Pon­derosa pine, white fir, pinyon-juniper, aspen, and sage­brush communities. Pinyon-juniper and ponderosa pine communities.
Elevation 1600–2600 m. (5200–8500 ft.) 1400–2400 m. (4600–7900 ft.)
Distribution
from FNA
AZ; NV; UT
from FNA
UT
Discussion

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.)

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.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Scytocarpi > Astragalus subcinereus Fabaceae > subfam. Faboideae > Astragalus > sect. Scytocarpi > Astragalus subcinereus
Sibling taxa
A. subcinereus var. basalticus, A. subcinereus var. sileranus
A. subcinereus var. sileranus, A. subcinereus var. subcinereus
Synonyms A. sileranus var. cariacus
Name authority unknown S. L. Welsh: Great Basin Naturalist 38: 302. (1978)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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