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Photo is of parent taxon

soda springs milkvetch, Sodaville milk vetch

Photo is of parent taxon

freckled milkvetch, glass freckled milkvetch

Habit Plants perennial, to 70–80 cm. Plants perennial, 15–40 cm.
Stems

prostrate.

glabrous or glabrate.

Leaves

2–5 cm;

leaflets 9–15(or 17), blades oblanceolate, 6–18 mm, terminal leaflet 7–15 mm, apex obtuse or subacute.

4.5–10 cm;

leaflets (7–)13–19, blades obovate-cuneate or oblong-obovate, (5–)7–17(–21) mm, apex obtuse or truncate-emarginate.

Racemes

shortly and loosely 6–12-flowered, short and compact in fruit;

axis 1–2 cm in fruit.

loosely (10–)15–27-flowered, lax and open in fruit;

axis 4–8.5 cm in fruit.

Peduncles

1.5–4 cm.

4–9.5 cm.

Flowers

14–14.5 mm;

calyx 7–8 mm, tube 4.8–5.5 mm, lobes 2.2–2.5 mm;

corolla purple.

13.2–17 mm;

calyx 6.5–8 mm, tube 4.6–5.7 mm, lobes (1.5–)1.7–2.3 mm;

corolla pink-purple or lavender with white wing tips.

Legumes

mottled, ovoid or broadly lanceoloid, moderately inflated, 16–26 × 9–12 mm, semibilocular, stiffly papery, strigulose;

beak incurved, 4–8 mm, unilocular.

pale green and unmottled turning pallid, usually broadly ovoid, rarely lunately lanceoloid-acuminate, usually strongly inflated, rarely less so, 15–25 × (7–)9–15 mm, papery-membranous, subtranslucent, lustrous, glabrous;

beak triangular, short, unilocular.

Seeds

12–20.

21–31.

2n

= 22.

Astragalus lentiginosus var. sesquimetralis

Astragalus lentiginosus var. vitreus

Phenology Flowering May–Jun. Flowering Apr–Jun.
Habitat Saline, seasonally moist clay flats, around seeps and springs. Gullied badlands and desert flats, on sand or clay derived from sandstone or limestone, on volcanic gravel.
Elevation 900–1400 m. (3000–4600 ft.) 800–1500(–2000) m. (2600–4900(–6600) ft.)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
AZ; UT
[BONAP county map]
Discussion

The branches of var. sesquimetralis radiate, forming large, round plants that hug the ground. This habit, coupled with a long season of available water, is evidently conducive to long-continuing flowering and fruiting but is not necessarily an indication of a near relationship to other taxa that are similar (see discussion under 285c. var. multiracemosus). The variety is restricted to southern Mineral County, Nevada, and northern Inyo County, California.

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

Variety vitreus is found in the valleys of the upper Virgin River and Kanab Creek, southward to the northern slope of the Kaibab Plateau, and Toroweap and House Rock valleys in eastern Washington and western Kane counties in Utah, and northern Mohave and northwestern Coconino counties in Arizona.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus
Sibling taxa
A. lentiginosus var. albifolius, A. lentiginosus var. ambiguus, A. lentiginosus var. antonius, A. lentiginosus var. australis, A. lentiginosus var. chartaceus, A. lentiginosus var. coachellae, A. lentiginosus var. coulteri, A. lentiginosus var. diphysus, A. lentiginosus var. floribundus, A. lentiginosus var. fremontii, A. lentiginosus var. higginsii, A. lentiginosus var. idriensis, A. lentiginosus var. ineptus, A. lentiginosus var. kennedyi, A. lentiginosus var. kernensis, A. lentiginosus var. latus, A. lentiginosus var. lentiginosus, A. lentiginosus var. macrolobus, A. lentiginosus var. maricopae, A. lentiginosus var. micans, A. lentiginosus var. mokiacensis, A. lentiginosus var. multiracemosus, A. lentiginosus var. negundo, A. lentiginosus var. nigricalycis, A. lentiginosus var. oropedii, A. lentiginosus var. palans, A. lentiginosus var. piscinensis, A. lentiginosus var. platyphyllidius, A. lentiginosus var. pohlii, A. lentiginosus var. salinus, A. lentiginosus var. scorpionis, A. lentiginosus var. semotus, A. lentiginosus var. sierrae, A. lentiginosus var. stramineus, A. lentiginosus var. toyabensis, A. lentiginosus var. trumbullensis, A. lentiginosus var. variabilis, A. lentiginosus var. vitreus, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus
A. lentiginosus var. albifolius, A. lentiginosus var. ambiguus, A. lentiginosus var. antonius, A. lentiginosus var. australis, A. lentiginosus var. chartaceus, A. lentiginosus var. coachellae, A. lentiginosus var. coulteri, A. lentiginosus var. diphysus, A. lentiginosus var. floribundus, A. lentiginosus var. fremontii, A. lentiginosus var. higginsii, A. lentiginosus var. idriensis, A. lentiginosus var. ineptus, A. lentiginosus var. kennedyi, A. lentiginosus var. kernensis, A. lentiginosus var. latus, A. lentiginosus var. lentiginosus, A. lentiginosus var. macrolobus, A. lentiginosus var. maricopae, A. lentiginosus var. micans, A. lentiginosus var. mokiacensis, A. lentiginosus var. multiracemosus, A. lentiginosus var. negundo, A. lentiginosus var. nigricalycis, A. lentiginosus var. oropedii, A. lentiginosus var. palans, A. lentiginosus var. piscinensis, A. lentiginosus var. platyphyllidius, A. lentiginosus var. pohlii, A. lentiginosus var. salinus, A. lentiginosus var. scorpionis, A. lentiginosus var. semotus, A. lentiginosus var. sesquimetralis, A. lentiginosus var. sierrae, A. lentiginosus var. stramineus, A. lentiginosus var. toyabensis, A. lentiginosus var. trumbullensis, A. lentiginosus var. variabilis, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus
Synonyms Cystium sesquimetrale
Name authority (Rydberg) Barneby: Leafl. W. Bot. 4: 116. (1945) Barneby: Leafl. W. Bot. 4: 119, plate 3, figs. 30–33. (1945)
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