Attachment_4_Wyoming_State_Designated_Weed_List.docx

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Invasive Plant Roadside Treatments for Grand Teton
Solicitation number
140P1426Q0065
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This is an attachment listing Wyoming's state-designated noxious weeds that serves as a reference document for the invasive plant roadside treatment contract for Grand Teton National Park. The document identifies plant species that are classified as noxious weeds under Wyoming state law and regulations, which contractors must be prepared to treat and manage along roadsides within the park boundaries. The list establishes the scope of invasive plant species that fall under the state's jurisdiction and must be addressed as part of the roadside treatment work. This attachment provides the botanical and common names of designated noxious weeds, enabling contractors to understand which invasive plant species require treatment and control measures during the performance of roadside maintenance activities at Grand Teton National Park.

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State Designated Weed List 1.

2. Field bindweed (Convolvulus arvensis L.)

3. Canada thistle (Cirsium arvense L.)

4. Leafy spurge (Euphorbia esula L.)

5. Perennial sowthistle (Sonchus arvensis L.)

6. Quackgrass (Agropyron repens (L.) Beauv.)

7. Hoary cress (whitetop) (Cardaria draba and Cardaria pubescens (L.) Desv.)

8. Perennial pepperweed (giant whitetop) (Lepidium latifolium L.)

9. Ox-eye daisy (Chrysanthemum leucanthemum L.)

10. Skeletonleaf bursage (Franseria discolor Nutt.)

11. Russian knapweed (Centaurea repens L.)

12. Yellow toadflax (Linaria vulgaris L.)

13. Dalmatian toadflax (Linaria dalmatica (L.) Mill.)

14. Scotch thistle (Onopordum acanthium L.)

15. Musk thistle (Carduus nutans L.)

16. Common burdock (Arctium minus (Hill) Bernh.)

17. Plumeless thistle (Carduus acanthoides L.)

18. Dyers woad (Isatis tinctoria L.)

19. Houndstongue (Cynoglossum officinale L.)

20. Spotted knapweed (Centaurea maculosa Lam.)

21. Diffuse knapweed (Centaurea diffusa Lam.)

22. Purple loosestrife (Lythrum salicaria L.)

23. Saltcedar (Tamarix spp.)

24. Common St. Johnswort (Hypericum perforatum)

25. Common Tansy (Tanacetum vulgare)

26. Russian olive (Elaeagnus angustifolia)

27. Black Henbane (Hyoscyamus Niger L.)

28. Common Mullein (Verbascum thapsus L.)

29. Yellow starthistle (Centaurea solstitialis L.)

30. Ventenata (Ventenata dubia (Leers) Coss.)

31. Medusahead rye (Taeniatherum caput-medusae (L.) Nevski)

32. Palmer amaranth (Amaranthus palmer This page intentionally left blank.

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