rachis

The pinnules are from a line to two lines long, and are adnate to the secondary rachis by a more or less decurrent base.

The stipes is somewhat longer than the rachis, and it is of a whity-green colour.

A simple inflorescence of flowers on pedicels of equal length arranged on a common, elongated axis (rachis).

A simple inflorescence of sessile flowers arranged on a common, elongated axis (rachis).

Under these conditions the midvein is called the rachis (a), and the divisions are called the pinn (b).