Flora of North America species comparison

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Astragalus serenoi var. serenoi

Astragalus sect. Nudi
Photo is of parent taxon

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

20–45 cm.

several to many.
Leaves

5–15 cm.

odd-pinnate, short-petiolate;

leaflets (1–)5–11.
Racemes

(3–)7–25-flowered;

axis (2–)5–20 cm in fruit.

loosely flowered, flowers ascending.
Peduncles

(7–)10–25 cm.

Corollas

purple, petals strongly graduated;

banner 17–26 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

plumply oblong, straight or slightly incurved, 17–31 × 7–10.5(–12) mm, unilocular.

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

29–42.
Hairs

basifixed.
Stipules

distinct.
2n

= 22.

Astragalus serenoi var. serenoi

Astragalus sect. Nudi
Phenology Flowering May–Jul.
Habitat Sagebrush and pinyon-juniper communities.
Elevation 1100–2300 m. (3600–7500 ft.)
Distribution
from FNA
NV
[BONAP county map]
w United States
Discussion

Variety serenoi occurs from northcentral Humboldt County southward to Churchill and adjacent Lander and northwestern 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. shockleyi, A. serenoi var. sordescens
Subordinate taxa
Synonyms Brachyphragma
Name authority unknown (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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