Pinnate (leaf), when leaflets are arranged along the sides of a common petiole, [57].
Pinnately lobed, cleft, parted, divided, veined, [56].
Pinnatifid, Pinnatisect, same as pinnately cleft and pinnately parted, [56].
Pisiform, pea-shaped.
Pistil, the seed-bearing organ of the flower, [14], [80], [105].
Pistillate, having a pistil, [85].
Pistillidium, the body which in Mosses answers to the pistil, [159], [164].
Pitchers, [64].
Pith, the cellular centre of an exogenous stem, [138].
Placenta, the surface or part of the ovary to which the ovules are attached, [107].