Parenchyma, soft cellular tissue of plants, like the green pulp of leaves, [132].

Parietal (placentæ, &c.), attached to the walls (parietes) of the ovary.

Paripinnate, pinnate with an even number of leaflets.

Parted, separated or cleft into parts almost to the base, [55].

Parthenogenesis, producing seed without fertilization.

Partial involucre, same as an involucel; partial petiole, a division of a main leaf-stalk or the stalk of a leaflet; partial peduncle, a branch of a peduncle; partial umbel, an umbellet, [76].

Partition, a segment of a parted leaf; or an internal wall in an ovary, anther, &c.

Patelliform, disk-shaped, like the patella or kneepan.

Patent, spreading, open. Patulous, moderately spreading.

Pauci-, in composition, few; as pauciflorous, few-flowered, &c.