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information on specific descriptions,county locations,and management recommendations for highlighted species are given in this <br /> website. <br /> List A Species <br /> List A species in Colorado that are designated by the Commissioner for eradication: <br /> • African rue(Peganum harmala) State info <br /> • Camelthorn (Alhagi pseudalhagi) State info <br /> • Common crupina(Crupina vulgaris) State info <br /> • Cypress spurge(Euphorbia ctiparissias) County info I State info <br /> • Dyer's woad (Isatis tinctoria) State info <br /> • Elongated mustard (Brassica elongata) State info <br /> • Flowering rush (Butomus umbellatus) State info <br /> • Giant reed (Anindo donax) State info <br /> • Giant salvinia (Salvinia molesta) Other info I State info <br /> • Hairy willow-herb (Epilobium hirsutum) State info <br /> • Hydrilla(Hydrilla verticillata) State info <br /> • Knotweed (Polygonum spp.) State info <br /> • Meadow knapweed (Centaurea pratensis) State info <br /> • Mediterranean sage(Salvia aethiopis) County info I State info <br /> • Medusahead (Taeniatherum Caput-medatsae) State info <br /> • Myrtle spurge(Euphorbia mvrsinites) County info I State info <br /> • Orange hawkweed (Hieracium aurantiac•uni) County info State info <br /> • Parrot feather(Myriophyllum aquaticum) State info <br /> • Purple loosestrife(Lythrum salicaria) County info I State info <br /> • Rush skeletonweed(Chondrilla juncea) State info <br /> • Squarrose knapweed (Centaurea virgata) State info <br /> • Tansy ragwort (Senecio jacobaea) State info <br /> • Yellow starthistle(Centaurea solstitialis) County info I State info <br /> A Top <br /> List B Species <br /> List B weed species are species for which the Commissioner,in consultation with the state noxious weed advisory committee,local <br /> governments,and other interested parties,develops and implements state noxious weed management plans designed to stop the <br /> continued spread of these species: <br /> • Absinth wormwood(Artemisia absinthium) State info <br /> • Black henbane(Hvoscvamus niger) County info I State info <br />