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Photo is of parent taxon

lesser rushy milkvetch

Photo is of parent taxon

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
from FNA
AZ; CO; ID; MT; NV; UT; WY
[BONAP county map]
from FNA
NV
[BONAP county map]
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 Fabaceae > subfam. Faboideae > Astragalus > sect. Genistoidei > Astragalus convallarius Fabaceae > subfam. Faboideae > Astragalus > sect. Genistoidei > Astragalus convallarius
Sibling taxa
A. convallarius var. finitimus, A. convallarius var. margaretiae, A. convallarius var. scopulorum
A. convallarius var. convallarius, A. convallarius var. finitimus, A. convallarius var. scopulorum
Name authority unknown Barneby: Brittonia 36: 167. (1984) — (as margaretae)
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