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Photo is of parent taxon

Siler's milkvetch

Photo is of parent taxon

Fremont junction milkvetch

Stems

prostrate, 14–60 cm, often conspicuously flexuous.

prostrate, 40–90 cm.

Flowers

5–9 mm.

8.5–11 mm.

Legumes

ellipsoid, turgid, not bladdery-inflated, length usually more than 2 times width, 5–8 mm wide (if shorter, less than 7 mm wide and texture leathery).

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

Astragalus subcinereus var. sileranus

Astragalus subcinereus var. basalticus

Phenology Flowering May–Aug. Flowering May–Jul.
Habitat Ponderosa pine, aspen, oak, pinyon-juniper, and mixed mountain brush communi­ties. Pinyon-juniper and ponderosa pine communities.
Elevation 1700–2800 m. (5600–9200 ft.) 1400–2400 m. (4600–7900 ft.)
Distribution
from FNA
NV; UT
from FNA
UT
Discussion

Variety sileranus occurs in Lincoln County in Nevada, and Garfield, Iron, Kane, and eastern Washington counties in Utah.

The main overlap in distribution between vars. subcinereus and sileranus occurs in Lincoln County, Nevada, but still, this variety is most closely allied to the disjunct var. basalticus of central Utah.

(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. subcinereus
A. subcinereus var. sileranus, A. subcinereus var. subcinereus
Synonyms A. sileranus, Phaca sileriana
Name authority (M. E. Jones) S. L. Welsh: Great Basin Naturalist 58: 49. (1998) S. L. Welsh: Great Basin Naturalist 38: 302. (1978)
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