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Houndstongue, Hound's Tongue, Gypsyflower - Cynoglossum officinale


Family: Boraginaceae Borage family Genus Common Name: Hound's tongue Native Status: Introduced
Cynoglossum officinale - Houndstongue, Hound's Tongue, Gypsyflower. c.Found in all but 7 states (and most of Canada), Cynoglossum officinale is listed as a noxious weed in Colorado, Montana, Nevada, Oregon, Washington, and Wyoming.

Check here for more information about Cynoglossum officinale.

Distribution of Cynoglossum officinale in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 23 Jul 2014). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

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Site: Payette River Valley, Boise County, ID Date: 2010-June-17Photographer: Gerald C. Williamson
Red top purple flowers borne in clusters
Cynoglossum officinale

Site: Payette River Valley, Boise County, ID Date: 2010-June-17Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
Terminal raceme of Houndstongue / Gypsyflower blossoms
Click on the photo for a larger image
Cynoglossum officinale

Site: Payette River Valley, Boise County, ID Date: 2010-June-17Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
Many leaves of Cynoglossum officinale are petioled but some, like those shown here, are not. In my limited observation, those from whose axils flowers or stems grow are not petioled; leaves without flower or stems forming in the axils have petioles. This may also be a function of petioled lower leaves versus non-petioled upper leaves.
Click on the photo for a larger image
Cynoglossum officinale

Site: Payette River Valley, Boise County, ID Date: 2010-June-17Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
Cynoglossum officinale may grow to 4 feet or taller, with many stems terminated with blossom clusters forming forming on stems growing out of the leaf axils along the main stem. Many of the lower leaves are carried on winged petioles.
Click on the photo for a larger image
Cynoglossum officinale

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2014
Photographs Copyrighted by the named photographer