Stem and branches pinnate or bipinnate, the pinnae and pinnules alternate.
The stems are from one to four inches long, the pinnae about 1/4 to 1/2 inch, alternate.
The pinnae are also divided, but less distinctly, into internodes of various lengths.
Stems or branches pinnate: pinnae or branches alternate, straight, divaricate.
Pinnae was the name given to the side wings of the soldiers' helmets, apparently formed of feathers.
The eyes and external auditory meatus are closed, and the pinnae are folded.
Pinnae ventrales sub pectorales offixae, propter tenuitatem ventris invicem approximatae.
The pairs of cells on the pinnae are all secund, and in contact with each other at their bases, though widely divergent above.