The individual spikelets mai be awnless, i.e. without a protruding awn...

Here are some examples of awnless spikelets:

The spikelets are awned when they have evident, protruding awns:

Here are some examples of awned spikelets:

awns can be bent, like in Avena..:

...or straight, like in Bromus and several other genera:

In the genus Stipa the awns are very longs and feather-like:

In the genus Setaria the spikes are apparently awned, although these are not true awns originating from glumes or lemmas, but bristles originating from the base of the spikelets. Here we consider such inflorescences as 'awned':