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National Invasive Species Information Center
U.S. Department of Agriculture
Home / Terrestrial Invasives / Terrestrial Plants / Houndstongue

Houndstongue

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Houndstongue
Houndstongue, flowers - Photo by Mary Ellen (Mel) Harte
Scientific Name: 

Cynoglossum officinale L. (ITIS)

Common Name: 

Houndstongue, Hounds tongue, gypsy flower, rats and mice, dog bur

Native To: 

Eurasia (Kedzie-Webb and Sheley 2017)

Date of U.S. Introduction: 

First discovered in 1893 (Kedzie-Webb and Sheley 2017)

Means of Introduction: 

Introduced accidentally through contaminated seed (Kedzie-Webb and Sheley 2017)

Impact: 

Infests pasture and rangeland, where it is toxic to livestock (Kedzie-Webb and Sheley 2017)

Distribution / Maps / Survey Status

Early Detection & Distribution Mapping System (EDDMapS) - Houndstongue
University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.

Images

Google Images - Houndstongue
Google.
Invasive.org - Houndstongue
University of Georgia. Center for Invasive Species and Ecosystem Health.

Videos

YouTube - Noxious and Invasive Species: Houndstongue

Google. YouTube; Montana Department of Agriculture.

Selected Resources

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
Fact Sheet: Hound's Tongue (Jan 2014) (PDF | 700 KB)

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

Partnership
Global Invasive Species Database - Cynoglossum officinale (herb)
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Invasive Plant Atlas of the United States - Houndstongue
University of Georgia. Center for Invasive Species and Ecosystem Health.
Invasive Species Compendium - Cynoglossum officinale
CAB International.
Federal Government
Fire Effects Information System (FEIS) - Cynoglossum officinale
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
PLANTS Database - Gypsyflower
USDA. NRCS. National Plant Data Center.
U.S. National Plant Germplasm System - Cynoglossum officinale

USDA. ARS. National Genetic Resources Program. GRIN-Global.

State and Local Government
"B" Rated Weeds - Houndstongue (PDF | 2.04 MB)

Oregon Department of Agriculture. Plant Division. Noxious Weed Control.

See also: Oregon Noxious Weed Profiles for more species
Class B Noxious Weed: Houndstongue
Washington State Noxious Weed Control Board.
King County (Washington) Noxious Weed Control Program - Houndstongue

King County Department of Natural Resources (Washington). Water and Land Resources Division.

Noxious Weed Species - Houndstongue

Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.

Academic
MontGuide - Houndstongue: Identification, Biology and Integrated Management (2017)
Montana State University Extension.
Houndstongue Identification and Control (Jun 2013)
North Dakota State University. Extension Service.
Weed Control in Natural Areas in the Western United States: Houndstongue (2013) (PDF | 278 KB)
University of California. Weed Research and Information Center.
See also: Weeds in Natural Areas for more information sheets
Range Plants of Utah - Houndstongue

Utah State University. Extension.

Professional
Noxious Weed Information - Houndstongue
Colorado Weed Management Association.
Weed Identification - Houndstongue
Montana Weed Control Association.

Citations