Black Knapweed, Black Star-Thistle, Brown Knapweed, Brown Ray Knapweed, Brown Star-Thistle, Lesser Knapweed, Meadow Knapweed, Protean Knapweed, Short-Fringed Knapweed, Short-Fringed Star-Thistle, Tyrol Knapweed, Vochin Knapweed