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Photo is of parent taxon

freckled milkvetch, glass freckled milkvetch

Photo is of parent taxon

mokiak milkvetch

Habit Plants perennial, 15–40 cm. Plants perennial, 20–60 cm, herbage green or subglabrescent.
Stems

glabrous or glabrate.

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.

3–10(–13) cm;

leaflets (7 or)9–17(–21), blades broadly obovate-obcordate, lanceolate, elliptic, or suborbiculate-obcordate, 5–13(–19) mm, apex emarginate or retuse to truncate, adaxial surface glabrous.

Racemes

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

axis 4–8.5 cm in fruit.

loosely 12–20-flowered;

axis elongating, 3.5–18(–22) cm in fruit.

Peduncles

4–9.5 cm.

4–11(–14) 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.

(10–)14–18(–19) mm;

calyx 5–8(–9.2) mm, tube (3.5–)4–6.5 mm, lobes 1–2(–2.7) mm;

corolla pink- to red-purple, usually with pale or white wing tips.

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.

dehiscent on plant, usually ascending-erect to ascending, rarely spreading, green becoming stramineous, usually ± straight to incurved, rarely decurved, oblong-ellipsoid, not or scarcely inflated, slightly turgid, 14–28(–32) × 4.5–6.5 mm, ± bilocular, somewhat fleshy becoming leathery or stiffly papery, glabrous or minutely pubescent;

beak 3–4 mm, unilocular.

Seeds

21–31.

(22–)25–36.

2n

= 22.

= 22.

Astragalus lentiginosus var. vitreus

Astragalus lentiginosus var. mokiacensis

Phenology Flowering Apr–Jun. Flowering Mar–Jun.
Habitat Gullied badlands and desert flats, on sand or clay derived from sandstone or limestone, on volcanic gravel. Limestone on outcrops and gravel, on basaltic or granitic gravel and/or outcrops, with Hymenoclea, bursage, Joshua tree, Larrea, and Ferocactus.
Elevation 800–1500(–2000) m. (2600–4900(–6600) ft.) 700–1800 m. (2300–5900 ft.)
Distribution
from FNA
AZ; UT
[BONAP county map]
from FNA
AZ; NV; UT
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.)

The placement of var. mokiacensis has challenged generations of botanists. R. C. Barneby (1945) regarded var. mokiacensis as part of the lentiginosus complex but later (Barneby 1964) recognized it as a species within sect. Preussiani. In Washington County in Utah, var. mokiacensis has been consistently confused with var. palans. S. L. Welsh (2007) extensively discussed problems revolving around interpretation and distinction of var. mokiacensis. J. A. Alexander (2005) considered the taxon to be best recognized at the species level, as A. mokiacensis, the persistent fruit being otherwise unknown in A. lentiginosus. Alexander also presented a key to similar taxa and to minor variants within A. mokiacensis. As recognized here, the variety is found in Washington County in southwestern Utah, northwestern Mohave County in Arizona, and eastern Clark County in Nevada.

(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. 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. 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. mokiacensis, A. lentiginosus var. ursinus
Name authority Barneby: Leafl. W. Bot. 4: 119, plate 3, figs. 30–33. (1945) (A. Gray) M. E. Jones: Rev. N.-Amer. Astragalus, 126. (1923)
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