GLOSSARY. 443 



Pinnatifid. Cut in a pinnate manner. It dijffers from pinnate in 



consisting of a simple or continous leaf, not compound. 

 Pistil. A constituent part of a flower including the germ, style, 



and stigma. In a regular flower it forms the central part. 

 Pistillate. Having pistils, but no stamens. 

 Placenta. The part of the pericarp to which seeds are attached. 

 Plaited. Folded like a ruffle or fan ; as the leaves of Veratrum 



viride. Med. Bot. PI. 33. 

 Plumose. Feathery. Feather like. 

 Plumula. Part of the corculum of a seed, which afterwards forms 



a new plant with the exception of the root. 

 Pod. A dry seed vessel, not pulpy ; most commonly applied to 



legumes and siliques. 

 Pointal. See Pistil. 

 Polyadelphous. Belonging to the class Polyadelphia, in which 



the stamens are united into several parcels. 

 Polyandrous. Having many disconnected stamens inserted into 



the receptacle. 

 Polycarpous. Many fruited. 



Polycotyledonous. Having seeds with more than two cotyledons. 

 Polygamous. Having some flowers which are perfect, and others 



which have stamens only, or pistils only. 

 Polygynous. Having many styles. 



Polymorphous. Changeable. Assuming a variety of forms. 

 Polypetalous. Having many petals. 

 Polyphyllous. Having many leaves. 

 Pome. A fruit like the apple in which the seeds are inclosed in 



cartilaginous coverings, and imbedded in the thickened 



and pulpy calyx. 

 Prarfloratium. Same as JEstivation. 

 Prafoliation. The manner in which the young leaves are folded 



together in the bud. 

 Prctmorse. Bitten off". The same as abrupt. 

 Prickle. The prickle differs from the thorn in being fixed to the 



bark only and not to the wood. 

 Prismatic. Having several parallel, flat sides. 

 Procumbent. Lying on the ground. 



