Flora of North America species comparison

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Astragalus lentiginosus var. wilsonii
Photo is of parent taxon

wilson's milkvetch
Habit Plants perennial, 20–50 cm, herbage green or subglabrescent.
Leaves

(3.5–)6–16 cm;

leaflets (11–)17–25, blades ovate, broadly elliptic, or oblong-obovate, (4–)6–20(–25) mm, apex obtuse to emarginate.
Racemes

shortly and loosely (7–)10–17(–22)-flowered;

axis not elongating, 1.5–4(–13) cm in fruit.
Peduncles

2.5–7(–8) cm.
Flowers

(14.2–)15–20 mm;

calyx (7–)7.7–9.4 mm, tube (5.5–)5.7–7.7 mm, lobes 1.5–3 mm;

corolla white or suffused or tipped pink or pink-purple.
Legumes

green or mottled becoming stramineous or brownish, narrowly lanceoloid-acuminate, scarcely to moderately inflated, (15–)20–35 × 3.8–7 mm, ± bilocular, stiffly papery, glabrous or puberulent;

beak 5–10 mm, unilocular.
Seeds

(29–)32–41.
2n

= 22.

Astragalus lentiginosus var. wilsonii
Phenology Flowering Feb–Jun.
Habitat Ponderosa pine forests, oak and juniper communities on volcanic substrates.
Elevation 900–2200 m. (3000–7200 ft.)
Distribution
from FNA
AZ
[BONAP county map]
Discussion

Variety wilsonii occurs on the Coconino Plateau near Flagstaff and near the head of the Verde River in southwestern Coconino, northwestern Gila, and eastern Yavapai counties. Some plants share features with the closely adjacent, but still disjunct, var. maricopae, as discussed by S. L. Welsh (2007). M. E. Jones (1923) placed these in var. palans, a taxon well to the north. Provisionally, these unusual plants form a portion of what has traditionally been understood as var. wilsonii.

(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. 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. yuccanus
Synonyms A. wilsonii
Name authority (Greene) Barneby: Leafl. W. Bot. 4: 139. (1945)
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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