| houndstongue | USDA PLANTS Symbol: CYOF U.S. Nativity: Exotic Habit: Forbs/Herbs |
| Cynoglossum officinale L. |
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Taxonomic Rank: Magnoliopsida: Lamiales: Boraginaceae |
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| 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. |
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| Selected Images from Invasive.org | View All Images at Invasive.org |
 Plant(s); Mary Ellen (Mel) Harte, , Bugwood.org Additional Resolutions & Image Usage |
 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 Additional Resolutions & Image Usage |
 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 Additional Resolutions & Image Usage |
 Seed(s); Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Joseph M. DiTomaso, University of California - Davis, Bugwood.org Additional Resolutions & Image Usage |
| 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 Alternative content
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 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. Alternative content
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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) |
