Cephalaria transylvanica

syriaca and the ornamental C. transylvanica, a tall annual that produces large, stiff, globe-shaped, white to bluish flower heads and has divided leaves. Knautia has 60 species, some cultivated, such as field scabious (K. arvensis). Devil’s bit (Succisa pratensis), a blue-flowered perennial, grows wild in European meadows. Its leaves…