Pen´dulous, hanging down.

Pen´icillate (penicillus, a pencil), pencil-shaped; having a tuft of short hairs resembling a camel’s-hair brush.

Peren´nial (perennis, lasting the year through, < per, through, + annus, year), continuing growth from year to year.

Pergame´neous (pergamena, parchment, + eous), like parchment.

Pericli´nal (Gr—sloping on all sides + al), said of wall cells or any lines when parallel with the outer surface.

Peridi´olum (dim. of peridium), a secondary or interior peridium containing a hymenium.

Perid´ium (pl. Perid´ia) (Gr—a pouch, wallet), the outer enveloping coat of the sporophore in angiocarpous fungi, as in puff-balls.

Periph´eral, of, belonging to or situated on the periphery.

Periph´ery (peripheria, the line around a circle, circumference, part of a circle), the exterior surface of any body.

Per´istome (peristomium, around a mouth), toothed or variously shaped ring around the mouth or orifice for discharge of spores in a peridium.