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Photo is of parent taxon

Coachella milkvetch, Coachella Valley milk vetch, Palm Springs freckled milkvetch

Photo is of parent taxon

freckled milkvetch, Kaibab Plateau milkvetch

Habit 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. Plants perennial, (10–)20–80 cm.
Stems

erect and ascending.

decumbent or weakly ascending, flexuous or zigzag in age, glabrous or glabrate.

Leaves

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.

5–15 cm;

leaflets 15–21(–25), blades broadly oblong-elliptic, ovate-oblong, or suborbiculate, 5–20(–25) mm, apex rounded, truncate, or retuse.

Racemes

loosely 11–25-flowered, lax and open in fruit;

axis (3–)4–10 cm in fruit.

shortly (8–)10–25-flowered, compact in fruit;

axis little elongating, 1.5–4(–5) cm in fruit.

Peduncles

3.5–8 cm.

(2–)3–10 cm.

Flowers

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.

(12.5–)13.2–20 mm;

calyx 7.5–10.8 mm, tube (4.5–)5–7.5 mm, lobes (2.5–)3–5 mm;

corolla purple or pale pink-purple.

Legumes

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.

mottled, obliquely ovoid or semi-ovoid, ± strongly inflated, 13–25(–30) × 6.5–14 mm, ± bilocular, stiffly papery, glabrous;

beak 5–8 mm, unilocular.

Seeds

24–30.

20–33.

Astragalus lentiginosus var. coachellae

Astragalus lentiginosus var. oropedii

Phenology Flowering Feb–May. Flowering Jun–Sep.
Habitat Sandy flats, washes, outwash fans, on dunes, in Larrea belt. Openings in ponderosa pine for­ests.
Elevation -10–400 m. (-0–1300 ft.) 2100–2500 m. (6900–8200 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
AZ
[BONAP county map]
Discussion

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.)

Variety oropedii is locally common but apparently confined to the Kaibab Plateau, especially the North Rim and upper levels of the northern wall of the Grand Canyon in Coconino County. Specimens with thin-textured, subdiaphanous fruits that occur within or near known localities of var. oropedii have been tentatively placed with var. vitreus.

(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. 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
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. 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
Name authority Barneby in F. Shreve and I. L. Wiggins: Veg. Fl. Sonoran Desert, 695. (1964) Barneby: Leafl. W. Bot. 4: 135. (1945)
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