soda springs milkvetch, Sodaville milk vetch
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Coachella milkvetch, Coachella Valley milk vetch, Palm Springs freckled milkvetch
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Plants perennial, to 70–80 cm. |
Plants winter-annual or perennial (short-lived, often flowering first year), clump-forming, (10–)15–30(–55) cm, herbage silvery-canescent, hairs to 0.7–1.2 mm. |
prostrate. |
erect and ascending. |
2–5 cm; leaflets 9–15(or 17), blades oblanceolate, 6–18 mm, terminal leaflet 7–15 mm, apex obtuse or subacute. |
5–11.5 cm; leaflets (7–)11–17(–21), blades broadly oval to obovate-cuneate or oblong-elliptic, 5–15(–17) mm, apex emarginate, or obtuse and apiculate. |
shortly and loosely 6–12-flowered, short and compact in fruit; axis 1–2 cm in fruit. |
loosely 11–25-flowered, lax and open in fruit; axis (3–)4–10 cm in fruit. |
1.5–4 cm. |
3.5–8 cm. |
14–14.5 mm; calyx 7–8 mm, tube 4.8–5.5 mm, lobes 2.2–2.5 mm; corolla purple. |
12.7–14.5 mm; calyx 6.6–7.8 mm, tube 4.5–5.3 mm, lobes 1.7–2.9 mm; corolla pink-purple. |
mottled, ovoid or broadly lanceoloid, moderately inflated, 16–26 × 9–12 mm, semibilocular, stiffly papery, strigulose; beak incurved, 4–8 mm, unilocular. |
usually mottled, broadly and obliquely ovoid-acuminate, greatly inflated, 16–21 × 9–14 mm, bilocular, stiffly papery, canescent-strigulose; beak 3.5–6 mm, unilocular. |
12–20. |
24–30. |
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Flowering May–Jun. |
Flowering Feb–May. |
Saline, seasonally moist clay flats, around seeps and springs. |
Sandy flats, washes, outwash fans, on dunes, in Larrea belt. |
900–1400 m. (3000–4600 ft.) |
-10–400 m. (-0–1300 ft.) |
CA; NV |
CA |
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 coachellae occurs at low elevations in and around the Coachella Valley in Riverside County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
FNA vol. 11. |
FNA vol. 11. |
Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus |
Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus |
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. 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. vitreus, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus |
Cystium sesquimetrale |
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(Rydberg) Barneby: Leafl. W. Bot. 4: 116. (1945) |
Barneby in F. Shreve and I. L. Wiggins: Veg. Fl. Sonoran Desert, 695. (1964) |
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