Astragalus kentrophyta var. jessiae |
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jessie's kentrophyta, spiny milkvetch |
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Habit | Plants spreading or prostrate, loosely mat-forming, 5–35 cm wide. |
Stems | and herbage strigulose, hairs malpighian. |
Leaves | 1–1.7 cm; stipules dimorphic, those at proximal nodes connate into short, bidentate sheath, those at distal nodes longer, connate at base only, lanceolate or lanceolate-acuminate, often without spines, 1.5–7(–8) mm; leaflets 5, blades 4–10 mm, surfaces pubescent. |
Peduncles | 0.1–0.6 cm. |
Flowers | 5.2–6.5 mm; calyx 3.6–5.1 mm, tube 1.6–2.5 mm, lobes subulate, spinulose, 1.9–3 mm; corolla whitish, banner and keel tips sometimes faintly tinged pink or lilac. |
Legumes | lenticular or ovoid-lenticular, 3–4.5 × 1.4–2 mm. |
Seeds | 2(or 3). |
2n | = 24. |
Astragalus kentrophyta var. jessiae |
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Phenology | Flowering Jun–Aug. |
Habitat | Bluffs, ridges, dunes, sandy sites. |
Elevation | 700–2400 m. (2300–7900 ft.) |
Distribution |
ID; OR; UT; WY |
Discussion | The distribution of var. jessiae is bicentric: southwestern Idaho and southeastern Oregon, and northeastern Utah and southwestern Wyoming. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Synonyms | A. jessiae |
Name authority | (M. Peck) Barneby: Leafl. W. Bot. 6: 154. (1951) |
Web links |