Phænogamous. Having flowers with stamens and pistils and producing seeds.
Phyllodium. A somewhat dilated petiole having the form of and serving as a leaf-blade.
Pilose. Hairy, especially with soft hairs.
Pinna (pl. Pinnæ). One of the primary divisions of a pinnate or compoundly pinnate frond or leaf.
Pinnate (leaf). Compound, with the leaflets arranged on each side of a common petiole.
Pinnatifid. Pinnately cleft.
Pinnule. A secondary pinna; one of the pinnately disposed divisions of a pinna.
Pistil. The seed-bearing organ of the flower, consisting of the ovary, stigma, and style when present.
Pistillate. Provided with pistils, and, in its more proper sense, without stamens.
Pitted. Marked with small depressions or pits.