Flora of North America species comparison

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Astragalus lentiginosus var. nigricalycis
Photo is of parent taxon

Bakersfield freckled milkvetch, black hair milk vetch, freckled milkvetch
Habit Plants perennial, 25–55 cm.
Stems

decumbent to ascending.
Leaves

(4–)6–16 cm;

leaflets 19–25, blades oblong-oblanceolate to broadly obovate or rhombic-obovate, (3–)7–25 mm, apex usually retuse.
Racemes

closely becoming loosely (10–)15–32-flowered, lax and open in fruit;

axis (2.5–)4.5–11(–13) cm in fruit.
Peduncles

4–11 cm.
Flowers

12–17(–18.5) mm;

calyx 6.4–8.2 mm, tube 4.7–6.2 mm, lobes 1.4–2.5 mm;

corolla creamy yellow or greenish yellow to greenish white (immaculate), yellow when dry, petals well-graduated, banner longer than wings, wings well exceeding keel.
Legumes

mottled, obliquely ovoid-acuminate, greatly inflated, (17–)20–35 × 10–20 mm, bilocular, papery, villosulous;

beak 4–8 mm, unilocular.

Astragalus lentiginosus var. nigricalycis
Phenology Flowering Mar–May (or fall).
Habitat Rolling hills, plains, gravelly banks, roadcuts.
Elevation 90–800(–1300) m. (300–2600(–4300) ft.)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Variety nigricalycis is known from the inner South Coast Ranges and foothills at the southern end of the Central Valley from San Benito and Fresno to Kern and Ventura counties.

The yellowish corollas with blackish calyces and the large, inflated but firm fruits distinguish var. nigricalycis in its region. In Kern County, it intergrades somewhat with var. variabilis.

(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. 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. 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. nigricalycis
Name authority M. E. Jones: Proc. Calif. Acad. Sci., ser. 2, 5: 674. (1895)
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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