Centaurea solstitialis (Yellow Starthistle) Centaurea solstitialis (Yellow Starthistle) Illustration of Centaurea solstitialis (Yellow Starthistle) yellow, starthistle, yellow, cockspur, plant, Plantae, vascular, Magnoliophyta, angiosperm, Magnoliopsida, dicot, Asteridae, Asterales, Asteraceae, Centaurea, solstitialis, forb, herb, herbaceous, annual, exotic, invasive, nonnative, noxious, weed 2005-08-24 image/svg+xml Centaurea solstitialis (Yellow Starthistle) 2005-08-24 Integration and Application Network https://ian.umces.edu/media-library/centaurea-solstitialis-yellow-starthistle/ https://ian.umces.edu/media-library/centaurea-solstitialis-yellow-starthistle/ en-US yellow, starthistle, yellow, cockspur, plant, Plantae, vascular, Magnoliophyta, angiosperm, Magnoliopsida, dicot, Asteridae, Asterales, Asteraceae, Centaurea, solstitialis, forb, herb, herbaceous, annual, exotic, invasive, nonnative, noxious, weed Illustration of Centaurea solstitialis (Yellow Starthistle)