Pedate. Palmately divided or parted, with the lateral segments 2-cleft.
Pedicel. The support of a single flower.
Pedicellate. Borne on a pedicel.
Peduncle. A primary flower-stalk, supporting either a cluster or a solitary flower.
Pedunculate. Borne upon a peduncle.
Peltate. Shield-formed and attached to the support by the lower surface.
Pendulous. More or less hanging or declined. Pendulous ovule, one that hangs from the side of the cell.
Perennial. Lasting year after year.
Perfect (flower). Having both pistil and stamens.
Perfoliate (leaf). Having the stem apparently passing through it.