UW Burke Herbarium species comparison

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Astragalus villosus

Astragalus lyallii

Lyall's milk-vetch
Habit Silky-grayish perennial from a woody taproot and knotty, branched crown, the several stems 1.5-4 dm. tall, often with flowers from below the middle.
Leaves

Leaves alternate, pinnate, 3-7.5 cm. long;

leaflets 11-21, linear to narrowly oblong, 10-15 mm. long;

stipules linear-tipped, 3-8 mm. long, the lower clasping, the upper free.
Flowers

Inflorescence of spike-like, axillary racemes, up to 15 cm. long and loosely 10- to 35-flowered;

peduncles shorter than the leaves;

flowers spreading to reflexed, 4.5-9 mm. long, white or purplish-tinged or -veined;

calyx bell-shaped, 3.5-5.5 mm. long, black-hairy, the 5 teeth linier, longer than the tube;

banner narrow, reflexed, 4.5-7.5 mm. long;

keel rounded;

stamens 10.
Fruits

Pod subsessile, reflexed, 5-9 mm. long, 2-celled by intrusion of lower suture, cordate in cross section with flat lateral sides.

Astragalus villosus

Astragalus lyallii
Flowering time May-June
Habitat Sagebrush and desert areas, especially on sand dunes.
Distribution
[WildflowerSearch map]
[BONAP county map]
Endemic to Washington from Kittitas and Douglas counties south to Benton, east to Grant and Adams counties.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
A. agrestis, A. alpinus, A. arrectus, A. arthuri, A. arthurii, A. asotinensis, A. australis, A. beckwithii, A. canadensis, A. caricinus, A. cicer, A. collinus, A. columbianus, A. conjunctus, A. cusickii, A. diaphanus, A. eucosmus, A. falcatus, A. filipes, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. kentrophyta, A. laxmannii, A. leibergii, A. lentiginosus, A. lyallii, A. microcystis, A. misellus, A. miser, A. pulsiferae, A. purshii, A. reventiformis, A. reventus, A. riparius, A. robbinsii, A. sclerocarpus, A. sheldonii, A. sinuatus, A. spaldingii, A. speirocarpus, A. succumbens, A. tenellus, A. tweedyi, A. whitneyi
A. agrestis, A. alpinus, A. arrectus, A. arthuri, A. arthurii, A. asotinensis, A. australis, A. beckwithii, A. canadensis, A. caricinus, A. cicer, A. collinus, A. columbianus, A. conjunctus, A. cusickii, A. diaphanus, A. eucosmus, A. falcatus, A. filipes, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. kentrophyta, A. laxmannii, A. leibergii, A. lentiginosus, A. microcystis, A. misellus, A. miser, A. pulsiferae, A. purshii, A. reventiformis, A. reventus, A. riparius, A. robbinsii, A. sclerocarpus, A. sheldonii, A. sinuatus, A. spaldingii, A. speirocarpus, A. succumbens, A. tenellus, A. tweedyi, A. whitneyi
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Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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