Ixeridium calcicola (Compositae), a new limestone endemic from Taiwan, with notes on its atypical basic chromosome number, phylogenetic affinities, and a limestone refugium hypothe... oleh Koh Nakamura, Shih-Wen Chung, Yoshiko Kono, Meng-Jung Ho, Tian-Chuan Hsu, Ching-I Peng