Michigan Trees: A Handbook of the Native and Most Important Introduced Species

by Charles Herbert Otis

Pith. The softer central part of a twig or stem. Page [xvi.]

Pollen. The fecundating grains borne in the anther.

Polygamo-dioecious. Sometimes perfect, sometimes unisexual, both forms borne on different individuals.

Polygamo-monoecious. Sometimes perfect, sometimes unisexual, both forms borne on the same individual.

Polygamous. Sometimes perfect, sometimes unisexual, both forms borne on the same or on different individuals.

Pome. A fleshy fruit, as the apple.

Posterior. The back side of a flower, next to the axis of inflorescence.

Prickle. A small spine growing from the bark.

Puberulent. Minutely pubescent.

Puberulous. Minutely pubescent.