Volutaria tubuliflora

Volutaria tubuliflora_Ron Vanderhoff
Photo: Ron Vanderhoff

Synonyms: Amberboa atlantica; Volutaria lippii subsp. tubuliflora

Common names: desert knapweed; Mediterranean knapweed

Volutaria tubuliflora (desert knapweed) is an annual herb (family Asteraceae) with pink-purple flowers and lobed hairy leaves found in the desert ranges and south coast ranges of California. It is native to northern Africa and the Mediterranean Basin. It favors grasslands, dunes, scrub and chaparral habitat. It propagates via multitudes of seeds. Seeds are dispersed via human traffic, machinery, water and wind.

Learn more about the Cal-IPC project to contain desert knapweed.

Cal-IPC Rating: Limited — Alert?

CDFA Rating: A*?


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.

Weed Management Notes

No Weed RIC Management Notes are available for this species. Check for information on other species in the genus on the Weed RIC site.

Cal-IPC Newsletter Articles

Cal-IPC Symposium Presentations

Presentations are linked where available. Where a presentation is not available, find more information by reading the abstract in the Cal-IPC Symposia Archive.

Other Volutaria tubuliflora Information

  • Bugwood - National database from the Center for Invasive Species and Ecosystem Health at the University of Georgia.
  • CalPhotos - Images of plants taken mostly in California.
  • Calflora - Distribution map and records of this species in California.
  • CalWeedMapper - Distribution map of this species in California with ability to determine regional priorities.
  • EDDMapS - Distribution of this species in North America.
  • Jepson Interchange - Information on this plant's taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
  • Additional photos

    Volutaria tubuliflora_leaves and stem_RonVanderhoff
    Volutaria tubuliflora (desert knapweed) leaves and stem. Photo: Ron Vanderhoff
    Volutaria tubuliflora_partially dissected flower head with maturing seeds_RonVanderhoff
    Volutaria tubuliflora (desert knapweed) partially dissected flower head with maturing seeds. Photo: Ron Vanderhoff
    Volutaria tubuliflora_seedling_RonVanderhoff
    Volutaria tubuliflora (desert knapweed) seedling. Photo: Ron Vanderhoff
    Volutaria tubuliflora_growth habit_RonVanderhoff
    Volutaria tubuliflora (desert knapweed) growth habit. Photo: Ron Vanderhoff
    Volutaria tubuliflora_flower heads_RonVanderhoff
    Volutaria tubuliflora (desert knapweed) flower heads. Photo: Ron Vanderhoff