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.Cal-IPC Rating: Limited
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.
Cal-IPC Newsletter Articles
- Wildland Weed News. Cal-IPC. Vol 25, Issue 2
- FROM THE DIRECTOR’S DESK: Nativism. Johnson, Doug. Vol 25, Issue 1
- Wildland Weed News. Cal-IPC. Vol 25, Issue 1
- Partnership aims to eradicate Volutaria tubuliflora. Robison, Ramona; Matthews, Pat; McDonald, Chris; Harris, Frank. Vol 25, Issue 1
- Getting it done on the ground. Johnson, Doug. Vol 24, Issue 1
- CDFA expands noxious weed list and revises process. Kelch, Dean. Vol 23, Issue 2
- Early detection/rapid response around the state. Cal-IPC. Vol 23, Issue 2
Cal-IPC Symposium Presentations
None for this species.
Other Volutaria tubuliflora Information
- CalPhotos - Images of plants taken mostly in California.
- CalFlora - Distribution information based on submitted observations and herbarium specimens.
- Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- CDFA - California official noxious weeds.
- Bugwood - National database from the Center for Invasive Species and Ecosystem Health at the University of Georgia.