Flora of North America species comparison

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Astragalus serenoi var. sordescens

Astragalus sect. Nudi
Photo is of parent taxon

dirtyish milkvetch, naked milkvetch
Habit Herbs perennial, forming bushy clumps, caulescent; caudex superficial, branched.
Stems

15–30 cm.

several to many.
Leaves

2–10 cm.

odd-pinnate, short-petiolate;

leaflets (1–)5–11.
Racemes

5–15-flowered;

axis 2–7(–10) cm in fruit.

loosely flowered, flowers ascending.
Peduncles

3–10 cm.

Corollas

ochroleucous and margined or tinged lavender, petals not especially graduated;

banner 14.5–16 mm.

purple, or ochroleucous and margined or tinged lavender, banner recurved through 35–45°, keel apex obtuse.
Calyx

tubes short-cylindric or narrowly cylindric.
Legumes

obliquely ovoid, slightly incurved, 15–22 × 5–7 mm, unilocular or subunilocular, septum 0–1 mm wide.

persistent, sessile, erect, ovoid or oblong-ovoid, subterete, unilocular to semibilocular.
Seeds

29–42.
Hairs

basifixed.
Stipules

distinct.

Astragalus serenoi var. sordescens

Astragalus sect. Nudi
Phenology Flowering May–Jul.
Habitat Gentle slopes and flats among, and often sheltering under or scrambling up through, low sagebrush.
Elevation 1500–2100 m. (4900–6900 ft.)
Distribution
from FNA
NV
[BONAP county map]
w United States
Discussion

Variety sordescens is known from Esmeralda and Nye counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Species 1.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Nudi > Astragalus serenoi Fabaceae > subfam. Faboideae > Astragalus
Sibling taxa
A. serenoi var. serenoi, A. serenoi var. shockleyi
Subordinate taxa
Synonyms Brachyphragma
Name authority Barneby: Leafl. W. Bot. 7: 195. (1954) (Rydberg) Barneby: Mem. New York Bot. Gard. 13: 545. (1964)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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