Astragalus convallarius var. convallarius |
Astragalus convallarius var. margaretiae |
|
---|---|---|
lesser rushy milkvetch |
lesser rushy milkvetch, Margaret's milkvetch |
|
Stems | (10–)20–50(–70) cm. |
(15–)18–30 cm. |
Leaflets | 0 or 3–11, blades 2–25(–33) mm. |
7–11 throughout, blades 3–13 mm. |
Pedicels | 1–5 mm. |
0.5–1.5 mm. |
Flowers | 8–11 mm; calyx 4.2–6 mm, tube 3.4–4.8 mm, lobes 0.4–1.4 mm. |
9–10 mm; calyx 4.5–5 mm, tube 3–4 mm, lobes 0.8–1.2 mm. |
Legumes | linear, 25–50(–53) × 2.5–3.3(–4.2) mm, length 8–18 times width, gradually or abruptly contracted to ± symmetric apex. |
narrowly oblanceolate, 13–20 × 3.5–5 mm, tapering downward into calyx from obliquely triangular apex. |
Seeds | 13–20. |
14–20. |
Bracteoles | 0. |
0. |
Astragalus convallarius var. convallarius |
Astragalus convallarius var. margaretiae |
|
Phenology | Flowering May–Aug. | Flowering May–Jun. |
Habitat | Mixed desert shrub, sagebrush, pinyon-juniper, mountain brush, ponderosa pine, and aspen communities. | Sagebrush and pinyon-juniper woodlands. |
Elevation | (1200–)1400–2900 m. ((3900–)4600–9500 ft.) | 1400–2800 m. (4600–9200 ft.) |
Distribution |
AZ; CO; ID; MT; NV; UT; WY |
NV |
Discussion | Variety convallarius demonstrates considerable variability in presence or absence of leaflets, length of fruits, shape and length of calyx-lobes, pubescence coloration in the inflorescences, and degree of development of the stipelike bases of the fruits. Various combinations of these features in the past have resulted in recognition of several taxa. R. C. Barneby (1947c) detailed and summarized variation in the complex. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The disjunct var. margaretiae is restricted to the Pine Nut Mountains of west-central Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Name authority | unknown | Barneby: Brittonia 36: 167. (1984) — (as margaretae) |
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