knapweed, centaurea is genus of between 350 and 600 species of herbaceous thistle-like flowering plants in the family asteraceae

america and angiosperms asparagales aster asteraceae bloom blooming blossom canada centaurea closeup conservation environment environmental family flora floral flower greater horticulture invasive knapweed knapweeds maculosa meadow natural nature north outdoors outside park pink plant purple species spotted summer sunflower thompson tommy wildflower wildflowers