PEDUNCULATED. — Supported upon a stem or stalk.

The pedunculated oak has its acorns borne upon a footstool.

PELORIA or PELORISM. — The appearance of regularity of structure in the flowers of plants which normally bear irregular flowers.

PELVIS. — The bony arch to which the hind limbs of vertebrate animals are articulated.

PETALS. — The leaves of the corolla, or second circle of organs in a flower. They are usually of delicate texture and brightly coloured.

PHYLLODINEOUS. — Having flattened, leaf-like twigs or leafstalks instead of true leaves.

PIGMENT. — The colouring material produced generally in the superficial