UW Burke Herbarium species comparison

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Astragalus succumbens

Astragalus hoodianus
Astragalus succumbens

crouching milk-vetch, sprawling milk-vetch

Hood River milk-vetch
Habit Robust perennial from a large, woody taproot and short, branched crown, the many stems 4-30 cm. tall, usually grayish-silky.
Leaves

Leaves alternate, pinnate, numerous, crowded, 7-30 cm. long;

leaflets 17-37, linear to oblong-oblanceolate, 3-25 mm. long and 1-4 mm. wide, with fine, appressed hairs on both surfaces or glabrous above;

stipules triangular, 3-7 mm. long, clasping or free.
Flowers

Inflorescence of lax, 7- to 35-flowered racemes, the peduncles exceeding the leaves;

flowers pea-like, 13-23 mm. long, white, drooping;

calyx tube bell-shaped, 1.5 times as long as thick;

calyx 11-15 mm. long, the 5 teeth 4.5-7.5 mm. long;

banner reflexed;

wings 2-4 mm. longer than the rounded keel;

stamens 10.
Fruits

Pods sessile, pubescent, fleshy when green, obcompressed, nearly straight, 15-30 mm. long and 3-6 mm. wide and twice as thick, abruptly acute, 1-celled, but the lower suture nearly dividing the cavity.

Astragalus succumbens

Astragalus hoodianus
Flowering time April-June April-June
Habitat Sagebrush deserts, sandy barrens and lower foothills. Dry, open areas in sagebrush and grasslands.
Distribution
Occurring east of the Cascades crest in Washington from Kittitas and Grant counties south; Washington to Umatilla and Gilliam Counties, Oregon.
[WildflowerSearch map]
[BONAP county map]
Occurring in the east end of the Columbia River Gorge in Klickitat County in Washington; Klickitat County, Washington to Hood River and Wasco counties in Oregon.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern 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. 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. 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
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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