GLOSSARY. 107 



Pericarp : the ripe ovary, enclosing the seeds. 



Perigynous : borne on the calyx ; a term applied to the petals and 

 stamens when they are inserted into the calyx. 



Persistent : remaining long in place. 



Personate: masked; a term applied to a 2-lipped corolla which 

 bears a prejection (palate) in the throat. 



Petal : a leaf of the corolla. 



Petaloid : petal-like. 



Petiole : leaf-stalk. 



Petioled, petiolate : famished with a petiole. 



Ph^nogamous : having flowers. 



Pilose: hairy. 



Pinnate leaf : a compound leaf with the leaflets arranged along the 

 sides of a common petiole. The common petiole may bear stalks, 

 having leaflets in their turn laterally ; we then call the leaf twice- 

 pinnate. A leaf may also be thrice-pinnate, etc. 



Pinnately lobed, cleft, parted, etc. : divided more or less deeply in 

 a pinnate manner. 



Pinnatifid : pinnately cleft. 



Pistil : the ovule-bearing organ of a flower. 



Placenta: a projection, column, or ridge (central or parietal) within 

 the ovary, which bears the ovules. 



Plumose : feathery ; a term applied to branching bristles when they 

 bear hairs along their sides, like the beard of a feather. 



Pod : any sort of capsule, also a follicle, particularly a legume. 



Pollen : the fertilizing powdery substance of the anther. 



PoLLEN-MASs : a more or less coherent congeries of pollen-grains. 



Poly- (in compounds from the Greek) : many. 



Polyadelphous: stamens united by their filaments into three or 

 more sets or bundles. 



Polyandrous : with more than twenty stamens inserted on the recep- 

 tacle. 



Polygamous flowers : some of the flowers perfect, and others di- 

 clinous, either on the same or on different specimens of a species. 



Polypetalous : with the petals distinct, not united into one piece. 



Polysepalous : with the Bepals distinct. 



Pouch: silicle. 



Procumbent : trailing on the ground. 



Produced : extended or prolonged. 



Prostrate : lying flat on the ground. 



