Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Roché, Cindy Talbott"

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Squarrose knapweed, Centaurea virgata Lam. ssp. squarrosa Gugl

Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Roché, Cindy Talbott; Burrill, L. C.; Pacific Northwest Cooperative Extension ([Covallis, Or.] : Oregon State University Extension Service, 1994-09)

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 U ...