Regularity: Regularly occurring
Regularity: Regularly occurring
Localities documented in Tropicos sources
Canada (North America)
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
- Boivin, B. 1967. Flora of the Prairie Provinces. Phytologia 15(6): 329–446. http://www.tropicos.org/Reference/400
- Barneby, R. C. 1952. A revision of the North American species of Oxytropis DC. Proc. Calif. Acad. Sci. 27: 177–312. http://www.tropicos.org/Reference/19
- Cronquist, A. J., A. H. Holmgren, N. H. Holmgren, Reveal & P. K. Holmgren. 1989. Vascular Plants of the Intermountain West, U.S.A., FABALES. 3B: 1–279. In A. J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermount. Fl. Hafner Pub. Co., New York. http://www.tropicos.org/Reference/35722
Molecular Biology and Genetics
Statistics of barcoding coverage: Oxytropis campestris
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
NatureServe Conservation Status
Rounded Global Status Rank: G5 - Secure
It is found in prairies, woods, and meadows, and prefers gravelly and rocky slopes, where it grows most abundantly. The plant has numerous variants.
Oxytropis campestris blooms flowers from May to July. These are racemes that are capitate or oblong, 4 to 15 cm in length. The plants have 8 to 32 flowers that rise from a scape. The actual flowers have five lobes and form a calyx tube. They are of a cream to yellowish color, but sometimes of pink, blue, or purple, with hairs that are usually black. The keel petals are pointed, and often have purple blotches.
The plant also produces fruit which matures from July to September. These are legumes which are oblong-ovate 1.5 to 2 cm in length. They are mostly sessile and dehiscent from the tip. The fruit has membranous and contains many seeds.
The plant grows perennially, with an acaulescent forb reaching 20 to 50 cm in height and has a taproot.
Leaves grow alternately in a pinnate fashion and are usually 8 to 40 cm long. The leaves are dimorphic, with primary leaves short ovate leaflets, and secondary leaves with 11 to 33 leaflets. These secondary leaflets are 1 to 2.5 cm long.
The Oxytropis campestris plant is poisonous and may cause loco disease in livestock. From this it derives the common name field locoweed or some other variations. It is therefore worthless as food and is consumed only when other forage is not available.
Though this plant is common in general, one variety, var. chartacea, is a rare taxon limited to two counties in the state of Wisconsin. It is federally listed as a threatened species of the United States.
- Stubbendieck, James; Hatch, Stephan L; Butterfield, Charles H (February 1, 1992). North American Range Plants. U of Nebraska Press. ISBN 0-8032-9205-8. p. 357.
- USFWS. Determination of threatened status for Oxytropis campestris var. chartacea. Federal Register September 28, 1988.
- USFWS. Oxytropis campestris var. chartacea Five-year Review. 2009.
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- Pink, A. (2004). Gardening for the Million. Project Gutenberg Literary Archive Foundation. http://www.gutenberg.org/etext/11892.
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