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Mogollon woolly locoweed, woolly locoweed

Habit Plants acaulescent, usually dwarf.
Stems

reduced to thick crowns, closely invested with stipules.

Leaves

(4–)6–16 cm;

stipules 5–12 mm;

leaflets (9–)13–23, blades broadly elliptic to suborbiculate, 3–13 mm.

Racemes

densely 12–32-flowered;

axis 1.5–6 cm in fruit.

Peduncles

scapiform, 4–10 cm.

Flowers

calyx 10–15.3 mm, tube 6.6–8.5 × 3.2–5 mm, lobes 3.3–6.8 mm;

corolla pink-purple;

banner 16–21.5 mm;

keel 12.5–14.5 mm.

Legumes

± straight to gently incurved, narrowly ovoid or lunately ellipsoid, 9–13 × 4.5–6 mm, densely villous-tomentose, hairs to 1.6–2.6 mm;

beak bilocular.

Seeds

19–28.

Astragalus mollissimus var. mogollonicus

Phenology Flowering Apr–Jul.
Habitat Stony flats and hilltops, on pebbly, volcanic soils of open ponderosa pine forests, on limestone substrates, rocky knolls in pinyon-juniper belt.
Elevation 1800–2300 m. (5900–7500 ft.)
Distribution
from FNA
AZ; NM
[BONAP county map]
Discussion

D. Isely (1998) viewed var. mogollonicus as a reduced phase of var. bigelovii, but var. mogollonicus is distinguished by its acaulescent growth habit and scapiform peduncles. It occurs from the Kaibab Plateau south of the Grand Canyon in Arizona to the southeast along the Mogollon Escarpment to western New Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Mollissimi > Astragalus mollissimus
Sibling taxa
A. mollissimus var. bigelovii, A. mollissimus var. coryi, A. mollissimus var. earlei, A. mollissimus var. marcidus, A. mollissimus var. matthewsii, A. mollissimus var. mollissimus, A. mollissimus var. thompsoniae
Synonyms A. mogollonicus, A. bigelovii var. mogollonicus
Name authority (Greene) Barneby: Mem. New York Bot. Gard. 13: 745. (1964)
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