The inflorescence

 The inflorescence of a grass is described with respect to how spikelets are arranged on a plant, not how individual flowers are arranged.

The arrangement may be described as spike-like, panicle-like, raceme-like, etc.

Spikelets may be sessile on the sides of major inforescecence branches. They may have short pedicels, or they may be attached singly at the ends of slender branches.