The second and the third glumes are subequal 5- to 7-nerved.
The fifth and sixth glumes when present are small and empty.
There are usually five to six glumes (and rarely up to eight).
The first two glumes are unequal, oblong or lanceolate, 1-nerved.
The first two glumes are membranous, lanceolate, and subequal.
The first glume is very minute and the other glumes are ...