Ch. pleiacantha A–C shoots, showing fresh culm leaf sheaths yellowish-white, apically purplish-red D the abaxial side of culm leaf sheath, with yellowish tuberculate setae E the lateral side of culm leaf sheath, showing margins with faint yellow cilia F the base of culm leaf sheath, with densely brown-purple setae G upper part of culm leaf in adaxial view, showing absent ligule and auricles H upper part of culm leaf in abaxial view, showing shorter blade.