A note on the genus Cyanus (Asteraceae, Cardueae) from Iran

Abstract

Cyanus persicus Ranjbar & Negaresh sp. nova (Asteraceae) is described and illustrated from Hamedan Province, W Iran. The new species is closely related to C. depressus, but differs from it by the length of internodes of median stem leaf (4–6 cm vs. 0.5–1 cm), color of flowers (white vs. blue or violet), color of appendages (white vs. brown or deeply brown), and also indumentum of achenes (glabrous vs. pubescent).