Flora of North America species comparison

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Astragalus tephrodes var. tephrodes
Photo is of parent taxon

ashen milkvetch
Stems

1–12(–15) cm.
Leaves

4.5–10(–19) cm;

leaflets (11–)17–27(–31), blades mostly conduplicate, loosely folded, obovate-cuneate or oblanceolate, 3–16 mm, apex obtuse, emarginate, or subacute.
Racemes

(9–)11–20-flowered;

axis 2–6(–8.5) cm in fruit.
Peduncles

4–14(–17) cm.
Flowers

11.8–17.5 mm;

calyx (5–)6.4–8.5(–9.2) mm, tube (3.5–)4.5–6.8(–8) mm, lobes 1.2–2.2 mm;

corolla banner 11.8–17.5 mm;

keel 10.2–14.5 mm.
Legumes

obliquely ovoid-acuminate, 13–20 × 5–8 mm, beak 3–6 mm, thinly leathery, hardly rigid, not rugulose, densely pilosulous.
Seeds

26–31.
Stipules

2–7 mm.
2n

= 22.

Astragalus tephrodes var. tephrodes
Phenology Flowering Apr–Jun.
Habitat Oak brush, among junipers, in yucca-grasslands, edges of ponderosa pine forests, on granitic or volcanic bedrock.
Elevation 1400–2200 m. (4600–7200 ft.)
Distribution
from FNA
AZ; NM; Mexico (Sonora)
[BONAP county map]
Discussion

Variety tephrodes is locally plentiful in the foothills of the Mogollon and Pinos Altos mountains in southwestern New Mexico, eastward to the Organ Mountains and southward into Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Argophylli > Astragalus tephrodes
Sibling taxa
A. tephrodes var. brachylobus, A. tephrodes var. chloridae
Name authority unknown
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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