The Manual of the Botany of the Northern United States / Including the District East of the Mississippi and North of North Carolina and Tennessee

by Asa Gray

Polypetalous. Having separate petals.

Pome. A kind of fleshy fruit of which the apple is the type.

Porose. Pierced with small holes or pores.

Posterior. In an axillary flower, on the side nearest to the axis of inflorescence.

Posticous. On the posterior side; extrorse.

Præmorse. Appearing as if bitten off.

Prickle. A small spine or more or less slender sharp outgrowth from the bark or rind.

Prismatic. Of the shape of a prism, angular, with flat sides, and of nearly uniform size throughout.

Procumbent. Lying on the ground.

Proliferous. Producing offshoots.