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Apnea_dix C <br /> -State Noxious Weeds <br /> Routt County's"weeds of concern". Their control is strongly encouraged by all <br /> landowners in the county. Those in bold are known to be problems in the county. <br /> 1. Absinth wormwood Artemisia absinthium <br /> 2. African rue Peganum harmala <br /> 3. Black henbane Hyoscyamus niger <br /> 4. Black nighshade Solanum nigrum <br /> 5. Blue mustard Chorispora tenella <br /> 6. Bouncingbet Saponaria of cinalis <br /> 7. Bull thistle Cirsium vulgare <br /> 8. Camelthorn Alhagi pseudalhagi <br /> 9. Canada thistle Cirsium arvense <br /> 10.Chicory Cichorium intybus <br /> 11. Chinese clematis Clematis orientalis <br /> 12.Tarweed,mountain or coastal Madia glomerata or saliva <br /> 13. Common burdock Arctium minus <br /> 14. Common crupina Crupina vulgaris <br /> 15. Common groundsel Senecio vulgaris <br /> 16.Common mullein Verbascum thapsus <br /> 17. Common St.Johnswort Hypericum perforatum <br /> 18. Common tansy Tanacetum vulgare <br /> 19. Common teasel Dipsacus fullonum <br /> 20. Cypress spurge Euphorbia cyparissias, <br /> 21. Dame's rocket Hesperis matronalis <br /> 22. Downy brome Bromus tectorum <br /> 23. Dyer's woad Isatis tinctoria <br /> 24. Eurasian watermilfoil Myriophyllum spicaium <br /> 25. Field bindweed Convolvulus arvensi.s <br /> 26.Flixweed Descurainia Sophia <br /> 27.Giant salvinia Salvinia molesta <br /> 28. Green foxtail Setaria viridis <br /> 29.Hairy nightshade Solanum sarrachoides <br /> 30. Halogeton Halogeton glomerants <br /> 31.Houndstongue Cynoglossum officinale <br /> 32. Hydrilla Hydrilla hydrilla <br /> 33. Johnson grass Sorghum halepense <br /> 34.Jointed goatgrass Aegilops cylindrical <br /> 35.Kochia Kochia scoparia <br /> 36.Mayweed chamomile Anthemis cotula <br /> 37. Mediterranean sage Salvia aethiopis <br /> 38.Medusahead rye Taeniatherum caput-medusae <br /> 39. Moth mullein Verbascum blattaria <br /> 40. Musk thistle Carduus nutans <br /> 41.Myrtle spurge Euphorbia myrsinites <br /> 10 <br />