SQUAREROSE KNAPWEED (Centaurea vigata Lam.) GROWTH HABIT: Perennial, erect to 18 inches. LEAVES: Covered with dense fine hair. Lower leaves - deeply dissected. Upper leaves - bract like. STEMS: Many branched, covered with dense fine hair. FLOWER: Terminal, small, rose to pink colored. Cract tip spines are sharp, spreading, recurved. And longer than the lateral spines on each bract. ROOTS: Taproot. SEEDS: 3 to 4 per head, 1/8 inch long, heads fall readily from plant stems. OTHER: Introduced from eastern Mediterranean.

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