Flora of North America species comparison

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Astragalus lentiginosus var. idriensis
Photo is of parent taxon

freckled milkvetch, New Idria milk vetch
Habit Plants perennial, (10–)15–40 cm.
Leaves

(2–)3–11 cm;

leaflets (7–)17–27(or 29), blades oval-obovate, obovate-cuneate, or broadly oblanceolate, (2–)3–15(–18) mm, apex truncate or emarginate.
Racemes

7–20-flowered, short and compact in fruit;

axis (0.5–)1–4 cm in fruit.
Peduncles

(1.5–)3–6 cm.
Flowers

(12–)14–19(–20) mm;

calyx (5–)6.2–11 mm, tube (4.2–)4.7–7.2 mm, lobes (0.5–)1.3–3.4 mm;

corolla brilliant or pale pink-purple.
Legumes

green, usually red-mottled, obliquely ovoid or lunately semi-ovoid, greatly or slightly inflated, 12–30 × 5-16 mm, semibilocular, somewhat fleshy becoming leathery or stiffly papery, strigulose, hairs usually white, rarely black;

beak 3–10 mm, unilocular.
Seeds

21–30.

Astragalus lentiginosus var. idriensis
Phenology Flowering Apr–Jun.
Habitat Dry, grassy hillsides, canyon floors and benches, on shale or sandstone outcrops, in arid grasslands with blue oak, with foothill pine, among sagebrush.
Elevation 300–2100 m. (1000–6900 ft.)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Variety idriensis occurs in and around the head of the San Joaquin Valley and in the South Coast ranges, where it is the only form of Astragalus lentiginosus with shortly racemose purple flowers that is native (R. C. Barneby 1964).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa 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. 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. idriensis, A. tehachapiensis
Name authority M. E. Jones: Contr. W. Bot. 10: 63. (1902)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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