Comparison of frond sketches of representative specimens available (H. obtusidentatum: Chang1258, H. pseudobscurum: Chang1010, H. excisum: Chang992) for species of the Hymenasplenium excisum subclade.

  Part of: Chang Y, Zhang G, Wang Z, Cao L (2022) ´╗┐Molecular and morphological evidence reveals a new fern species of Hymenasplenium (Aspleniaceae) from south and southwestern China. PhytoKeys 211: 93-106.