A morphological comparison between Melanoseris penghuana and M. likiangensis A1–A6 M. penghuana: A1 basal leaves A2 trichomes on the peduncle under an anatomy microscope A3 simple filiform hairs on the leaves under a light microscope A4 capitulum A5 involucre A6 achene B1–B6 M. likiangensis: B1 basal leaves B2 trichomes on the peduncle under an anatomy microscope B3 multiseriate capitate glandular hairs on the leaves under a light microscope B4 capitulum B5 involucre B6 achene. Scale bars: 2 mm. A1–A2, A4, A5 were photographed by Qin Tian, others were photographed by Ze-Huan Wang.