Chrysanthemum zhuozishanense (Compositae), a New Species in Section Chrysanthemum from Inner Mongolia, China

Chrysanthemum zhuozishanense L. Q. Zhao & J. Yang, a new species (Compositae) from Inner Mongolia, China, is described and illustrated. It appears most closely related to C. lavandulifolium (Fisch. ex Trautv.) Makino but is distinguished by its capitula 8-10 mm diam., the white or pink ray florets, the lamina 4-5 mm, and the style branches with the truncate and papillose apex. Plants are densely pubescent throughout, with simple trichomes. The new species is assigned to Chrysanthemum L. sect. Chrysanthemum on the basis of the phyllaries with brown scarious margins.