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Photo is of parent taxon

freckled milkvetch, glass freckled milkvetch

Photo is of parent taxon

broadleaf milkvetch, cobweb milkvetch

Habit Plants perennial, 15–40 cm. Plants perennial, 10–35 cm.
Stems

glabrous or glabrate.

diffuse and incurved-ascending, often red-tinged.

Leaves

4.5–10 cm;

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

(2.5–)4–11 cm;

leaflets (9 or)11–23, blades elliptic-oblanceolate, broadly oblong-oblanceolate, or obovate, (3–)5–17(–20) mm, apex obtuse or emarginate.

Racemes

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

axis 4–8.5 cm in fruit.

(5–)10–20-flowered, flowering from middle and distally, short and compact in fruit;

axis (0.5–)1.5–4(–5.5) cm in fruit.

Peduncles

4–9.5 cm.

(1–)2.5–6(–7.5) cm.

Flowers

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.

(12.5–)15–18.2 mm;

calyx (6.2–)7.5–10.5 mm, tube (4.6–)5.2–6.7 mm, lobes 1.4–3.8 mm;

corolla bright pink-purple with pale, striate eye.

Legumes

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.

green, often red-mottled, becoming stramineous, usually strongly incurved, ovoid, lanceoloid-ovoid, or ovoid-acuminate, moderately inflated, 15–30(–40) × (7–)9–15 mm, bilocular, stiffly papery or almost leathery, usually glabrous, rarely puberulent;

beak well-defined, triangular or deltoid, 6–15 mm, unilocular.

Seeds

21–31.

24–34(–38).

2n

= 22.

Astragalus lentiginosus var. vitreus

Astragalus lentiginosus var. chartaceus

Phenology Flowering Apr–Jun. Flowering May–Jul.
Habitat Gullied badlands and desert flats, on sand or clay derived from sandstone or limestone, on volcanic gravel. Sagebrush, pinyon-juniper, and mixed desert shrub communities, on alluvial silt, igne­ous gravel.
Elevation 800–1500(–2000) m. (2600–4900(–6600) ft.) 1400–2200 m. (4600–7200 ft.)
Distribution
from FNA
AZ; UT
[BONAP county map]
from FNA
NV; UT
[BONAP county map]
Discussion

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.)

Variety chartaceus is widespread from central to western Utah into northeastern and central Nevada, there intergrading with vars. fremontii, kennedyi, and toyabensis. S. L. Welsh (2007) discussed the problems of including this variety in an expanded var. diphysus and its complex relationships to other varieties.

(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. 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
A. lentiginosus var. albifolius, A. lentiginosus var. ambiguus, A. lentiginosus var. antonius, A. lentiginosus var. australis, 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. vitreus, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus
Synonyms A. araneosus, A. lentiginosus var. araneosus
Name authority Barneby: Leafl. W. Bot. 4: 119, plate 3, figs. 30–33. (1945) M. E. Jones: Proc. Calif. Acad. Sci., ser. 2, 5: 673. (1895)
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