Medicago polymorpha

Medicago polymorpha_California burclover_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: California burclover; burr medic

Medicago polymorpha (California burclover) is a perennial/annual forb/herb (family Fabaceae) found throughout California in disturbed areas such as pastures, roadsides and vacant lots. Although it is considered good forage for livestock in pastures, it can out-compete native species in natural areas. Despite its name, California burclover is native to the Mediterranean.

Rating: Limited

Cal-IPC Resources

  • Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.
  • CalWeedMapper - Statewide maps, climate models, and reports.
  • Cal-IPC News - Our quarterly newsletter. Each issue is available as a pdf.
  • Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium.
  • Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.

    Other Resources

    • USDA PLANTS database -
      Federal database with information on identification and distribution, and links to websites in individual states.
    • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
    • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
    • CalPhotos - Images of plants taken mostly in California.
    • Natural Resource Projects Inventory - State database with information on resource management projects throughout California. Query by the species of interest.

    Symposium Presentations

    • Quinn, L., B. Davis, et al. (2006). Does horse manure harbor invasive plants? Cal-IPC Symposium. Rohnert Park, CA.

    Cal-IPC News Articles

    • None for this species.