Common Knapweed / Hardhead
Flowers red-purple on erect stems. Involucral bracts blackish-brown. Lower leaves oblong, sometimes pinnate, stalked. Upper stalkless, undivided. Slightly hairy plant. Variable. Rayed form with enlarged outer florets. Height to 1m.
Abundant on roadsides, grassland, wasteland.
Similar: Greater Knapweed, C. scabiosa
Photographs above: Ballingeary, Co.Cork. July 2006