Localities documented in Tropicos sources
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
- Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley. http://www.tropicos.org/Reference/1717
- Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley. http://www.tropicos.org/Reference/1719
- Munz, P. A. 1968. Suppl. Calif. Fl. 1–224. University of California Press, Berkeley. http://www.tropicos.org/Reference/1718
Regularity: Regularly occurring
Global Range: Se. OR to CA, east to central ID, MT, WY, and CO.
Life History and Behavior
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
Eriogonum caespitosum is a species of wild buckwheat known by the common name matted buckwheat, or mat buckwheat. This is a common perennial plant native to the western United States from California to Montana, especially the Great Basin. It is also cultivated as a rock garden plant.
This is a tough perennial plant which grows in flat, woody mats in sand and gravel substrates. It has small, fuzzy gray leaves which are scoop-shaped due to their rolled edges. From the mat emerge many erect inflorescences with clusters of greenish-yellow and bright red rounded flowers which hang backwards over the edge of the involucre. Some of the flowers are bisexual and up to a centimeter wide each, and some are only staminate and are much smaller.