Oxytropis lambertii

Oxytropis lambertii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Genus:	Oxytropis
Species:	O. lambertii
Binomial name
	Oxytropis lambertii; Pursh

Oxytropis lambertii commonly known as purple locoweed,^[1] Colorado locoweed,^[2] Lambert's crazy weed,^[3] or Lambert’s Locoweed^[4] is a species of flowering plant in the legume family.

Distribution[edit]

It is native to grasslands in the Canadian Prairie of central Canada and in the mid-west and Great Plains of the United States from Texas to Manitoba and west to Arizona and Montana.^[5]^[1]

Description[edit]

Oxytropis lambertii is a perennial herb producing a patch of basal leaves around the root crown, and several showy erect inflorescences. The leaf is compound with several silvery-green leaflets. The inflorescence produces several flowers, each borne in a tubular purple or pinkish calyx of sepals covered thinly in silver hairs. The pealike flower corolla is reddish or bluish purple with a lighter patch at the base of the banner. The fruit is a cylindrical legume pod.

Toxic[edit]

The Oxytropis lambertii plant is one of the locoweeds most frequently implicated in livestock poisoning.^[6] The toxin is called swainsonine. Research suggests that the plant itself may not be toxic, but becomes toxic when inhabited by endophytic fungi of the genus Embellisia, which produce swainsonine.^[7]

References[edit]

^ ^a ^b USDA, NRCS. (2023). "Oxytropis lambertii Pursh". The PLANTS Database. Greensboro, NC USA.: National Plant Data Team. Retrieved 5 January 2023.
^ Crossley, John. "Oxytropis Lambertii, Purple Locoweed". The American Southwest. Retrieved 5 January 2023.
^ "Purple locoweed, Lambert's crazy weed". Guide to Poisonous Plants. Colorado State University. Retrieved 5 January 2023.
^ Fox, III, William E.; Allred, Kelly W.; Roalson, Eric H. "A Guide to the Common Locoweeds and Milkvetches of New Mexico". Cooperative Extension Service (CES) Publications. New Mexico State University. Retrieved 5 January 2023.
^ USGS. Native Wildflowers of the North Dakota Grasslands
^ Ralphs, M. H., et al. (2002). Distribution of locoweed toxin swainsonine in populations of Oxytropis lambertii. J Chem Ecol 28:4 701-7.
^ McLain-Romero, J., et al. (2004). The toxicosis of Embellisia fungi from locoweed (Oxytropis lambertii) is similar to locoweed toxicosis in rats. J Anim Sci 82 2169-74.

External links[edit]

Media related to Oxytropis lambertii at Wikimedia Commons

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[USDA_Plants_O.lambertii-1] USDA, NRCS. (2023). "Oxytropis lambertii Pursh". The PLANTS Database. Greensboro, NC USA.: National Plant Data Team. Retrieved 5 January 2023.

[AmericanSouthwest_O._Lambertii-2] Crossley, John. "Oxytropis Lambertii, Purple Locoweed". The American Southwest. Retrieved 5 January 2023.

[CSU_Purple_locoweed-3] "Purple locoweed, Lambert's crazy weed". Guide to Poisonous Plants. Colorado State University. Retrieved 5 January 2023.

[NMSU_Locoweeds_and_Milkvetches-4] Fox, III, William E.; Allred, Kelly W.; Roalson, Eric H. "A Guide to the Common Locoweeds and Milkvetches of New Mexico". Cooperative Extension Service (CES) Publications. New Mexico State University. Retrieved 5 January 2023.

[5] USGS. Native Wildflowers of the North Dakota Grasslands

[ralphs-6] Ralphs, M. H., et al. (2002). Distribution of locoweed toxin swainsonine in populations of Oxytropis lambertii. J Chem Ecol 28:4 701-7.

[mclain-7] McLain-Romero, J., et al. (2004). The toxicosis of Embellisia fungi from locoweed (Oxytropis lambertii) is similar to locoweed toxicosis in rats. J Anim Sci 82 2169-74.

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Distribution[edit]

Description[edit]

Toxic[edit]

See also[edit]

References[edit]

External links[edit]