Linaria genistifolia ssp. dalmatica (L. dalmatica) (Dalmation toadflax)

Linaria genistifolia ssp. dalmatica (L. dalmatica)

Photo Courtesy Lake Tahoe Basin Weed Coordinating Group

Linaria genistifolia ssp. dalmatica (L. dalmatica) (Dalmation toadflax) is an herbaceous perennial (family Scrophulariaceae) that was introduced as an ornamental. It can be found in disturbed open sites, fields, pastures, degraded rangelands, roadsides, agronomic and perennial crops. This weed is most commonly found in northern California, but can sporadically occur in other areas. Infestations often form large colonies, displacing desirable vegetation.

Cal-IPC Inventory rating: Moderate

Cal-IPC Resources on Linaria genistifolia spp. dalmatica (L. dalmatica)

• California Invasive Plant Inventory Assessment Form (pdf) - 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 News - Articles from our quarterly newsletter. Each issue is available as a pdf. List of articles on Linaria genistifolia spp. dalmatica.
• Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium. List of articles on Linaria genistifolia spp. dalmatica.

Cal-IPC News Articles

• Donaldson, S. (2003). Fighting weeds in the Tahoe basin. CalEPPC News. 11: 7.
• Ogden, J. E., M. Renz, et al. (2007). "Dip-and clip": A new treatment for herbaceous weeds. Cal-IPC News. 14: 7.
• Richardson, B. (2004). The A-rated north. Cal-IPC News. 12: 4-5,14.

Cal-IPC Symposium Proceedings

• Erskine-Ogden, J., M. J. Renz, et al. (2007). Managing herbaceous perennials in the Tahoe Basin. California Invasive Plant Council Symposium 2007. San Diego CA, California Invasive Plant Council.
• Donaldson, S., W. West, et al. (2003). Getting the job done: Working within the regulatory environment at Lake Tahoe to manage weeds. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
• O'Connell, R. A. (1997). Hydrilla: A case study: The state of California's noxious weed eradication programs. California Exotic Pest Plant Council Symposium '97. Concord, CA.
• O'Connell, R. A. (1999). The state of California's noxious weed eradication programs. California Exotic Pest Plant Council. Sacramento, CA.
• Pirosko, C. and S. Schoenig (2004). Forbs working group. California Invasive Plant Council Symposium 2004. Ventura, CA.

Other Resources on Linaria genistifolia spp. dalmatica (L. dalmatica)

• 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.
• The Nature Conservancy Management Summary - Information compiled by TNC land managers. Photos included for some species.
• Encycloweedia - Plants rated as noxious weeds by the California Department of Food and Agriculture.
• 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.

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