Peren´nial. Growing from year to year.
Perid´ium. The outer covering of the spores in some fungi, as in puff-balls.
Peridi´olum. The inside peridium containing the spores.
Pi´leus. See cap.
Pir´iform or pyriform. Pear-shaped.
Plane. Level surface.
Pores. The tubes in Polyporei.
Poste´rior. Term applied to the end of the gill next to the stem.
Pru´inose. Covered with a bloom or powder.
Pulver´ulent. Covered with powder or dust.