Leaf sheaths and blades scabrid ; ligule glabrous on back .

叶鞘和叶片粗糙；在背面上无毛的叶舌。

Sessile spikelets lanceolate , strongly scabrid to spinulose .

无梗小穗披针形，对具微刺强烈粗糙。

Basal and cauline leaves homomorphic ( or cauline leaves absent ) ; fruit ribs denticulate or finely scabrid .

基生和茎生叶同形(无的或茎生叶)；好的果棱具小齿或粗糙。