Common names: common houndstongue; beggar's-lice; dog bur; dog's tongue; glovewort; gypsyflower; sheelice; sticktight; woolmat
Cynoglossum officinale (houndstongue) is a biennial forb (family Boraginaceae) whose foliage can be toxic to horses and other livestock when it contaminates hay. In California, it is found in the Cascade Ranges. The seeds have hooked projections that facilitate long distance dispersal by animals and humans.Rating: Moderate
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- Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
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- DiTomaso, J. M. (2005). Efficacy and safety of new herbicides on the horizon. California Invasive Plant Council Symposium 2005. Chico, California, CA.
- Tu, M. and J. M. Randall (2002). 2002 Red alert! New introductions and recent expansions in California. California Exotic Pest Plant Council Symposium 2002. Sacramento, CA.
- Tu, M. and J. M. Randall (2003). 2003 Cal-IPC red alert! New invasions, recent expansions, and a few others to be on the look-out For. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
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