Squarrose knapweed, Centaurea virgata Lam. ssp. squarrosa Gugl.
By: C. Roché and L.C. Burrill.
Contributors: Washington State University. Cooperative Extension Service.
Series: PNW -- 422.; Weeds; PNW (Series) -- 422.; Weeds (Pacific Northwest Cooperative Extension)
Publisher: Washington State University Extension Service
Published: 1992
Place of publication: [Pullman, Wash.]
Language: eng
Subjects: Knapweeds -- Control.
Notes: "June 1992."