swainsonpea

Fabales > Fabaceae > Sphaerophysa salsula (Pallas) DC.
Synonym(s): Austrian peaweed, red bladder-vetch, alkali swainsonpea

Swainsonpea is a perennial herb that can grow to 5 ft. (1.5 m) in height. Leaves are compound with 15-23 leaflets. Leaflets are ovate, 1/5-3/4 in. (0.5-2 cm) long with short, white hairs on the lower surface. Flowering occurs from May to July, when red-orange flowers develop in the axils of the leaves, near the tip of the stem. Flowers are pea-like, stalked and 0.5 in. (12-14 mm) long. Fruits are ovoid, grooved on top, inflated at maturity and 0.4-1.4 in. (1.5-3.5 cm) long. Swainsonpea is native to Asia and invades roadsides, right-of-ways, ditches, and other disturbed sites.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Plant(s); in flower
Utah State University Archive, Utah State University, Bugwood.org
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Flower(s);
Utah State University Archive, Utah State University, Bugwood.org
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Plant(s);
Utah State University Archive, Utah State University, Bugwood.org
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Plant(s);
Utah State University Archive, Utah State University, Bugwood.org
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Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):

Check Invasive.org for most current lists.
  • California - Noxious Weed Law
  • Nevada - Noxious Weed Law
  • Oregon - Noxious Weed Law
  • Washington - Noxious Weed Law


External Links


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