Bellardia trixago

Bellardia trixago_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Synonyms: Bartsia trixago L., Rhinanthus trixago L.

Common names: bellardia; mediterranean lineseed

Bellardia trixago (bellardia) is an annual herb (family Scrophulariaceae) found in the San Francisco Bay region, southern Sacramento Valley, western North Coast Ranges and central coast of California. It is commonly found in disturbed grasslands, including rare serpentine grasslands, as well as along roadsides and in fields. Bellardia is a hemi-parasitic plant that connects its shallow roots to those of host plants. The plants rely on these host plants to obtain necessary nutrients for survival, but is capable of photosynthesis. The impacts and invasiveness of bellardia are generally minor, but it can crowd out rare native plants that are endemic to serpentine soils.

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.

Symposium Presentations

  • None for this species.

Cal-IPC News Articles

  • None for this species.