Astragalus kentrophyta var. coloradoensis |
Astragalus kentrophyta var. jessiae |
|
---|---|---|
Canyonlands kentrophyta, Colorado spiny milkvetch |
jessie's kentrophyta, spiny milkvetch |
|
Habit | Plants loosely mat- or clump-forming, low, to 12 cm. | Plants spreading or prostrate, loosely mat-forming, 5–35 cm wide. |
Stems | and herbage strigulose, hairs malpighian. |
and herbage strigulose, hairs malpighian. |
Leaves | 0.9–2.4 cm; stipules 1–12 mm; leaflets (3 or)5(or 7), blades 4–15 mm, surfaces pubescent. |
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 | 0.2–0.6 cm. |
0.1–0.6 cm. |
Flowers | 7.3–10 mm; calyx 6–8.3 mm, tube 2.4–3.3 mm, lobes subulate, spinulose, 3.4–5 mm; corolla pink-purple. |
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 | subsymmetrically ellipsoid, lanceoloid- or oblong-ellipsoid, (5–)7–10 × 2.8–4 mm. |
lenticular or ovoid-lenticular, 3–4.5 × 1.4–2 mm. |
Seeds | 4–8. |
2(or 3). |
2n | = 24. |
= 24. |
Astragalus kentrophyta var. coloradoensis |
Astragalus kentrophyta var. jessiae |
|
Phenology | Flowering Apr–Jun. | Flowering Jun–Aug. |
Habitat | Sandy wash bottoms, sandy pockets on sandstone rimrock, in mixed desert shrub communities. | Bluffs, ridges, dunes, sandy sites. |
Elevation | 900–1700 m. (3000–5600 ft.) | 700–2400 m. (2300–7900 ft.) |
Distribution |
AZ; UT |
ID; OR; UT; WY |
Discussion | Variety coloradoensis is known from north-central Arizona and south-central Utah. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. jessiae | |
Name authority | M. E. Jones: Contr. W. Bot. 10: 63. (1902) | (M. Peck) Barneby: Leafl. W. Bot. 6: 154. (1951) |
Web links |