Squarrose knapweed, Centaurea virgata Lam. ssp. squarrosa Gugl Public Deposited

http://ir.library.oregonstate.edu/concern/administrative_report_or_publications/4f16c314t

Published September 1994. Please check for up-to-date information in the OSU Extension Service Catalog:  http://extension.oregonstate.edu/catalog

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  • Squarrose knapweed, introduced from southwest Asia and the Middle East, became weedy in northern California and Utah by the early 1950s. How it was originally introduced is not known, but its spread in California and Utah was associated with the trailing of range sheep. Squarrose knapweed grows in the Klamath, Cascade, and northern Sierra Nevada Ranges and the Modoc Plateau in California. It has been documented in Humboldt, Siskiyou, Trinity, Shasta, Modoc, Lassen, and Plumas counties. In Utah, it grows on 150,000 acres in Juab, Tooele, Millard, Utah, and Sanpete counties, down from nearly 200,000 acres in the early 1990s.
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2011-04-01T21:30:26Z (GMT) No. of bitstreams: 1 pnw422-e.pdf: 324018 bytes, checksum: bf6a9b9f887ab2699afc38165baaa59d (MD5)
  • description.provenance : Submitted by Sandy Reichhuber (sandy.reichhuber@oregonstate.edu) on 2011-03-30T23:26:40Z No. of bitstreams: 1 pnw422-e.pdf: 324018 bytes, checksum: bf6a9b9f887ab2699afc38165baaa59d (MD5)
  • description.provenance : Made available in DSpace on 2011-04-01T21:30:26Z (GMT). No. of bitstreams: 1 pnw422-e.pdf: 324018 bytes, checksum: bf6a9b9f887ab2699afc38165baaa59d (MD5) Previous issue date: 1994-09

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