C

Culm:

Stem that terminates in an inflorescence.

D

Disarticulation:

Breaking up of inflorescence at maturity.

I

Inflorescence:

Part of a plant where the reproductive structures are located.

P

Perennial:

Plants that survive for more than one year.

R

Rachilla:

Central axis of the spikelet.

Rachis:

Central axis, used here for the central axis of the inflorescence.