Cynoglossum officinale L. (ITIS)
Houndstongue, Hounds tongue, gypsy flower, rats and mice, dog bur
Eurasia (Kedzie-Webb and Sheley 2017)
First discovered in 1893 (Kedzie-Webb and Sheley 2017)
Introduced accidentally through contaminated seed (Kedzie-Webb and Sheley 2017)
Infests pasture and rangeland, where it is toxic to livestock (Kedzie-Webb and Sheley 2017)
Distribution / Maps / Survey Status
Google. YouTube; Montana Department of Agriculture.
The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Houndstongue.
Council or Task Force
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act
USDA. ARS. National Genetic Resources Program. GRIN-Global.
State and Local Government
Oregon Department of Agriculture. Plant Division. Noxious Weed Control.
King County Department of Natural Resources (Washington). Water and Land Resources Division.
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Utah State University. Extension.
Integrated Taxonomic Information System. Cynoglossum officinale. [Accessed Sep 10, 2014].
Kedzie-Webb, S. and R.L. Sheley. 2017. Houndstongue: Identification, Biology and Integrated Management (PDF | 1.0 MB) Montana State University Extension. MontGuide MT199709AG.