GLOSSARY 203 
Parietal (of ovules)—Attached to the wall of the ovary (Vzola). 
Pedicel—A flower-stalk. 
Peltate (of leaves)—Nearly round, with the petiole in the centre 
(Hydrocotyle). 
Penicillate—Having the form of a pencil of hairs. 
Perianth—The calyx and corolla together or calyx alone (used 
chiefly in describing Endogens). 
Pericarp—The wall of the ovary. 
Perigyne (in Cyperacee)—The same as utricle. 
Perizynous (of stamens)—Attached to the calyx. 
Petiole—A leaf-stalk. 
Pinnate (of leaves)—Composed of numerous leaflets arranged in 
pairs on an axis (Vetch, Elder). 
Pinnatifid (of leaves)—Partially divided in a pinnate manner. 
Placenta—The part of the wall of the ovary to which the ovules are 
attached. 
Placentation—The mode of attachment of the ovules to the 
Ovary. 
Pollinatton—The falling of the pollen on the stigma. 
Pollintum—The contents of an anther-lobe where the pollen- 
grains are attached together in a solid mass (Asclefiadee, 
Orchidee). 
Proterandrous—When the stamens are mature before the stigma 
in the same flower (Ladzaie). 
Proterogynous—When the stigma is mature before the stamens in 
the same flower. 
Pseudocarp—An apparent fruit formed of some other part of the 
flower in addition to the mature ovary (Strawberry, Apple). 
Pyxis—A capsule splitting horizontally (Hyoscyamus, Anagallis). 
Raceme—An inflorescence composed of stalked flowers arranged 
on an axis, and opening in succession from below upwards 
(Bluebell, Laburnumy). 
Rachis—The axis of an inflorescence or of a pinnate leaf. 
Radicle—The part of the embryo which develops into the root. 
Receptacle—The apex of the flower-stalk from which the flowers 
spring. 
