Uppermost culm sheath closed for less than 1/4 of length; shoots extravaginal; rhizomes usually absent; panicle branches scabrid; lower glume 3-veined.

• 明显没有的圆锥花序分枝轮生；多年生植物的或很少发生一年生草本；下部颖片1-3脉的或，近等长于比临近的外稃或更长(5