* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download HOUNDSTONGUE - Delta County
Plant secondary metabolism wikipedia , lookup
History of botany wikipedia , lookup
Evolutionary history of plants wikipedia , lookup
Plant evolutionary developmental biology wikipedia , lookup
Plant defense against herbivory wikipedia , lookup
Plant breeding wikipedia , lookup
Plant physiology wikipedia , lookup
Plant morphology wikipedia , lookup
Historia Plantarum (Theophrastus) wikipedia , lookup
Kali tragus wikipedia , lookup
Plant use of endophytic fungi in defense wikipedia , lookup
Ecology of Banksia wikipedia , lookup
Gartons Agricultural Plant Breeders wikipedia , lookup
Ornamental bulbous plant wikipedia , lookup
Glossary of plant morphology wikipedia , lookup
Plant ecology wikipedia , lookup
Flowering plant wikipedia , lookup
Plant reproduction wikipedia , lookup
HOUNDSTONGUE: List B Species Cynoglossum officinale Status in Delta County: Found in pastures, forests and roadsides, primarily in higher elevations of eastern Delta County. Plant densities are higher in areas disturbed by logging, heavy grazing or road building. County Management Strategy: Suppression above approximately 7,000 feet elevation. Control Methods: Mechanical removal is very effective for small infestations, particularly after plants have bolted, when herbicides may not be as effective. Rosettes should be killed manually or with herbicides in the spring or fall. Plants that are bolting should be removed manually or sprayed as soon as possible. Flowering plants should be removed manually and mature flowerheads bagged to prevent seed spread. Beware to remove all seeds from clothing, shoes, shoelaces, etc. No biological agents are available for this species. Identification: Houndstongue is a biennial plant with rough hairy leaves that can be 1-12 inches long and 1-3 inches wide. Flowers can be maroon or white, are about 1/4" in diameter, and appear bell shaped. The seed pods (nutlets) are covered with hooked spines and provide a mechanism for dispersal on clothing and fur. The pods are flattened and somewhat heart shaped. A common name locally is beggar’s lice. Other names: None Similar Species: Other plants with sticky seeds, such as nodding beggar’s tick, western sticktight and catchweed bedstraw, can be confused with houndstongue. The shape of the seeds and/or the presence of stout straight spines on the seeds can distinguish these from houndstongue. Control Timing: In the rosette or early bolting stage. Control target: Prevent seed production. Toxicity: Houndstongue is extremely toxic to cattle and horses, less so to sheep. It produces alkaloids that cause liver damage. Photos: http://www.agf.gov.bc.ca/cropprot/weedguid/houndst.htm Fact sheets and control: http://www.weedsbc.ca/weed_desc/hounds.html