Astragalus mollissimus var. mogollonicus |
Astragalus mollissimus var. earlei |
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Mogollon woolly locoweed, woolly locoweed |
Earle's woolly locoweed, woolly locoweed |
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Habit | Plants acaulescent, usually dwarf. | Plants subacaulescent or shortly caulescent. |
Stems | reduced to thick crowns, closely invested with stipules. |
to 10(–16) cm. |
Leaves | (4–)6–16 cm; stipules 5–12 mm; leaflets (9–)13–23, blades broadly elliptic to suborbiculate, 3–13 mm. |
8–32 cm; stipules 5–15 mm; leaflets 19–35, blades oblanceolate, rhombic-ovate, or rhombic-obovate, (5–)10–30(–45) mm. |
Racemes | densely 12–32-flowered; axis 1.5–6 cm in fruit. |
15–36-flowered; axis elongating, 4–15 cm in fruit. |
Peduncles | scapiform, 4–10 cm. |
(5–)8–17 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. |
calyx (8.5–)8.8–10.5 mm, tube (4.5–)5–7 × 0.8–3(–3.2) mm, lobes 2.4–4 mm; corolla pink-purple or yellowish tipped and suffused or margined with dull purple; banner 12–17.5 mm; keel 9–13 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. |
± incurved, abruptly contracted distally, obliquely ovoid-ellipsoid or lanceoloid-ellipsoid, 9–14 × 4–6.5(–9) mm, usually sparsely villous-tomentulose or loosely strigulose, rarely glabrate or glabrous, hairs ascending and almost straight, or subappressed and curly, less than 1 mm; beak bilocular. |
Seeds | 19–28. |
20–30. |
2n | = 22, 24. |
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Astragalus mollissimus var. mogollonicus |
Astragalus mollissimus var. earlei |
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Phenology | Flowering Apr–Jul. | Flowering Mar–Jun. |
Habitat | Stony flats and hilltops, on pebbly, volcanic soils of open ponderosa pine forests, on limestone substrates, rocky knolls in pinyon-juniper belt. | Dry hills and grassy plains, on volcanic and calcareous soils. |
Elevation | 1800–2300 m. (5900–7500 ft.) | 1100–1800 m. (3600–5900 ft.) |
Distribution |
AZ; NM |
NM; TX; Mexico (Chihuahua) |
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.) |
Within the flora area, var. earlei is a plant common in the trans-Pecos region of Texas and southeastern New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. mogollonicus, A. bigelovii var. mogollonicus | A. earlei |
Name authority | (Greene) Barneby: Mem. New York Bot. Gard. 13: 745. (1964) | (Greene ex Rydberg) Tidestrom: Proc. Biol. Soc. Wash. 48: 40. (1935) |
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