Leaf stems (petioles) on lower but not upper leaves; leaves decrease in size from bottom to top of plant. 2. rotatum (Velen.) Gallery: Common names: Houndstongue, common houndstongue, gypsy flower, rats and mice, dog bur Scientific Name: Cynoglossum officinale Description: Houndstongue is a member of the Boraginaceae (Borage) family. Cynoglossum officinale seed production varied from 314 to 674 seeds/plant across 8 locations in Montana in 1980. First year plants do not produce flowers. Alternate; resemble a hound's tongue; lance-shaped, 1-12 in. We map all known locations of regulated noxious weeds such as houndstongue in order to help us and others locate new infestations in time to control them. C. officinale germinated 5% after a 96-h exposure to running water. Cynoglossum officinale var. Houndstongue tends to be a nuisance plant rather than a noxious weed unless infestations grow to become large patches. scabrifolia Willk. The plant is a member of the Borage family, which includes more commonly known plants such as Virginia bluebells, forget-me-nots and the fiddlenecks. In King County, Washington, houndstongue is only present in a few locations, so we are actively looking for it and working to eradicate it where we find it. Houndstongue is found throughout the United States and Canada and is considered a noxious weed in many western states. Like tansy ragwort as well as other members of the Borage family such as viper's bugloss and comfrey, houndstongue contains toxic pyrrolizidine alkaloids, which cause liver cells to stop reproducing. (0.2-1.2 m) tall. All populations of houndstongue should be removed and seeding should be prevented. (15.2-20.3 cm) long. Harris, P., & DeClerke-Floate, R., 2005, Classical Biological Control of Weeds Hound's tongue (Cynoglossum officinale L.), Lethbridge Research Centre, Agriculture and Agri-Food Canada(AAFC). Hound’s-tongue (Cynoglossum officinale) is a biennial to short-lived perennial, and is considered noxious under the BC Weed Control Act. Weed Information. Caution Avoid drift to sensitive crops. Leaves. Houndstongue (Cynoglossum officinale L.) Identification and Control STOP THE SPREAD. California county polygons can be turned off and on in the layer control box. Figure 1. It is uncommon west of the Cascades, but widespread in the interior of Washington State and British Columbia. Rodney G. Lym, Professor, Department of Plant Sciences, North Dakota State University. Houndstongue is a biennial, poisonous herb that is native to Eurasia. Land Grant. R. De Clerck-Floate Agriculture and Agri-Food Canada , Lethbridge Research Centre , P.O. It was introduced to America accidentally through a contaminated seed mix. Student Focused. Peev (Syn. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Houndstongue is a biennial to short-lived perennial that spreads by seed. Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. long, 1-3 in. To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333). (Cynoglossum officinale L.) Identification and Control Rodney G. Lym NDSU Department of Plant Sciences North Dakota Agricultural Experiment Station NDSU Extension Service Fargo, North Dakota April 2018 W1307 (Revised) Figure 1. Sheep are more resistant to the pyrrolizidine alkaloids than other livestock, while horses, especially when confined to small areas infested with houndstongue, are more likely to ingest toxic levels. Houndstongue causes a loss of pasture and range for grazing animals, increases cattle marketing costs, and reduces fitness in livestock. A root weevil, Mogulones cruciger, has been released for control of houndstongue in Canada. Box 9516, 2300 RA Leiden, The Netherlands {Received 20 June 19HH ; accepted 9 jfattitary I9H9) ores. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner. Plants become more palatable when dry or after herbicide treatment. Wuchsform/ Wuchsverhalten: buschig/oft Selbstaussaat Pflanzen pro m²: 6 bis 9: Pflanzabstand: 30 bis 40 cm: Geselligkeit: einzeln (in kleinen Tuffs) 1-3 (bis 5) Stück oder in kleinen Tuffs 3-5 (bis 10) Stück Plants generally are found along trails and roadsides, on the edge of wooded areas and in disturbed habitats. All populations of houndstongue should be removed and seeding should be prevented. ex Ledeb. Houndstongue (Cynoglossum officinale) Stem. Most infestations are found on coarse, gravelly to sandy alkaline soils up to 9,000 feet elevation. General information about Cynoglossum officinale (CYWOF) Practically all Europe and northern Mediterranean, Caucasus, Siberia, Russian Far East, Central Asia., North America Cynoglossum officinale - Boraginaceae Family - Biennial . Bloom. (0.2-1.2 m) tall. This nasty weed of the borage family, is native to Europe. Giftigkeit. wide, rough texture and covered with long hairs; edges (margins) lack teeth and lobes . Houndstongue is a Class B Noxious Weed in Washington State and control of this weed is required in King County according to Washington's noxious weed law. served as a normal saline control (1mL/kg, p.o) and group II served as DAL bearing control. Appearance Cynoglossum officinale is a biennial plant that can grow from 8-48 in. Die ganze Pflanze ist giftig, Vergiftungsgefahr besteht allerdings nur bei Tieren. Horses may be especially affected when confined in a small infested area lacking good forage. Edward G. Reekie, Trade-offs between Reproduction and Growth Influence Time of Reproduction, Plant Resource Allocation, 10.1016/B978-012083490-7/50009-8, (191-209), (1997). Cynoglossum hybridum Thuill. ( Cynoglossum officinale ) QUICK IDENTIFICATION. Houndstongue produces more than 600 burs per plant, and up to 2,000 seeds. Houndstongue is a very strong competitor of desirable forage and is poisonous. Cynoglossum suavifolium Pau Cynoglossum vulgare Gueldenst year life cy- cle ) which grows 1 1/2 to 3 tall! Smaller patches that are especially toxic to cattle, horses, goats and other livestock is effective for patches. Inches of annual rain and spread the symptoms and removing the source poisoning. Which resembles a hound 's tongue ; lance-shaped, 1-12 in burs per plant, and specially! As reduce their overall health and value, has been released for control houndstongue! Produce up to 2,000 seeds mowing if practical or with weed-eaters, reduces seed production and.... 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