Astragalus succumbens is a perennial species of flowering plant in the legume family, commonly referred to as Columbia milkvetch.[2] Other names include the crouching milkvetch and sprawling milkvetch.[3] It is native to north-central Oregon and south-central Washington in the Columbia River valley.[4]
| Astragalus succumbens | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Astragalus |
| Species: | A. succumbens
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| Binomial name | |
| Astragalus succumbens Douglas ex G.Don, 1832[1]
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Description
editAstragalus succumbens is a small- to medium-sized sprawling plant with compound leaves, bearing erect racemes of flowers that are usually light pink. It grows from a long taproot and forms multiple stems with alternate compound leaves, each up to about 10 cm (3.9 in) long and with multiple paired leaflets and one terminal leaflet. Each leaflet is obovate to elliptic, usually with an acute tip, 5 to 19 mm (0.20 to 0.75 in) long, and densely hairy on top. The flowers are born on a dense upright raceme growing from a leaf axil and are usually light pink with a darker center, but sometimes light purple or nearly white. The flower form is typical of the legume family, with banner, wing, and keel petals. The flower calyx has stout hairs and long pointed tooth-like lobes. The curved hairless seed pods are held erect to angled upward and are up to 40 mm (1.6 in) long and 7 mm (0.28 in) wide. The pods are first shiny green, turning reddish brown with age.[4][5]
Range and habitat
editAstragalus succumbens is found in the Columbia River valley in northern Oregon and south-central Washington. It usually grows in sandy soils among sagebrush and in somewhat barren areas.[4][5]
Gallery
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Flower -
Leaf
References
edit- ^ "Astragalus succumbens Douglas ex G.Don, 1832". Global Biodiversity Information Facility. Retrieved 19 October 2024.
- ^ "Astragalus succumbens | Columbia Milkvetch | Wildflowers of the Pacific Northwest". Pacific Northwest Wildflowers. Retrieved 19 October 2024.
- ^ "Astragalus succumbens – Flora of Eastern Washington and Adjacent Idaho". Eastern Washington University. 21 February 2020. Retrieved 19 October 2024.
- ^ a b c Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 138. University of Washington Press, Seattle.
- ^ a b Burke Herbarium Image Collection| http://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Astragalus%20succumbens
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