houndstongue USDA PLANTS Symbol: CYOF
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Cynoglossum officinale L.

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Taxonomic Rank: Magnoliopsida: Lamiales: Boraginaceae
Synonym(s): gypsyflower
Native Range: Europe (BAIL);

Houndstongue is a biennial plant that is 8-48 in. (20-122 cm) tall. First years growth is strictly vegetative and flowering occurs the second year. The first year the basal leaves are petiolate, elliptical, dark green and 6-8 in. (15-20 cm) long. The leaves on the flowering stem are alternate, sessile or clasping and narrower towards the top of the plant. In the early summer, flowers appear in racemes from the axils of the upper leaves. Flowers are reddish-purple with a five-lobed corolla. Houndstongue is native to Eurasia and occurs in riparian zones, coastlands, grasslands and agricultural areas.

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s);
Mary Ellen (Mel) Harte, , Bugwood.org
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Flower(s);
Mary Ellen (Mel) Harte, , Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Mary Ellen (Mel) Harte, , Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Mary Ellen (Mel) Harte, , Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Kurt Stueber, Max-Planck-Institute for Plant Breeding Research, Cologne, Bugwood.org
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Plant(s);
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 76.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Flower(s);
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
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EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

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U.S. National Parks where reported invasive:
Grand Canyon National Park (Arizona)
Rocky Mountains National Park (Colorado)
Yellowstone National Park (Wyoming)



Invasive Listing Sources:
California Invasive Plant Council
Faith Campbell, 1998
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Pacific Northwest Exotic Pest Plant Council, 1998