184 



GLOSSARY. 



attached on the under side al the 

 middle. 



P< nicillate, w it h ;i t ip or cluster of 

 fine hairs or bristles. 



Perfect, having both stamens and pis- 

 tils in the same flower. 



Perfoliate, where a Btem semis to pass 

 through or pierce a leaf. 



Perianth, the floral envelopes, includ- 

 ing both calyx and corolla when 

 both are present ; applied here 

 chiefly to those flowers in which 

 there is no marked differentiation 

 into calyx and corolla. 



Perigynous, inserted on the calyx. 



Persistent, falling away very tardily 

 or not at all. 



Pi rsonate, when the bilabiate corolla 

 has a very prominent palate or 

 eleval ion in t he throat. 



Petal, one of the parts or divisions 

 of a corolla, usually colored. 



Pi tiolati . having a petiole. 



Pi tiole, the stalk of a leaf. 



P< tioluli . the stalk of a leaflet. 



I' i lose, with long soft hairs. 



Pinnule, with the leaflets arranged 

 along each side of a common peti- 

 ole. 



Pinnatifid, cleft in a pinnate manner. 



Pistillate, provided with or contain- 

 ing a pistil or pistils, but no sta- 

 mens; fertile; said of a flower or 

 a plant. 



Placenta, that particular portion of 

 the ovary wall which hears the 

 ovules; it is sometimes strongly 

 differentiated; axile placentae are 



borne on the axis of the ovary or 



fruit ; parietal placentae on the 

 wall- of t lie o\ nry or fruit. 



Plaited. See Plicate. 



Plane, flal and even, without eleva 



tions or depressions; opposed to 



concave, convex, revolute, etc. 

 Plicdti . folded into length* ise plaits 



or folds. 

 Plumosi . finely a n d abundanl l\ 



branched, like a plume. 

 Pod, genera] term for any dry fruit 



which splits open; strictly a legume 



op follicle. 

 Polygamous, having perfect, pistillate 



and Btaminate flowers on the same 

 indi\ idnal ( polygamo-monoecious) 

 or on different individuals (poly- 

 gamo-dioecious). 



Posterior, the side behind, in an axil- 

 lary flower the side next to the axis; 

 superior. 



Prickly, armed with prickles or short 

 sliarp hard outgrowths of the epi- 

 derms of leaves or stems. 



Prismatic, shaped like a prism, with 

 flat faces separated by angles. 



Proliferous, bearing supplementary 

 flowering branches or shoots from 

 or near the summit or from the in- 

 florescence, which surpass the stem 

 or inflorescence. 



Prostrate, lying close along the 

 ground. 



Proterandrous, the anthers of a per- 

 fect flower dehiscing before the 

 stigma is receptive; proterogynous, 

 the reverse condition. 



Puberulent, minutely pubescent. 



Pubescent, clothed with hairs, espe- 

 cially soft or downy hairs. 



Punctate, dotted with point-like de- 

 pressions. 



Pungent, terminating in a rigid, 

 sharp or prickly point. 



Pustulate, dilated like a blister. 



Quinate, borne in or divided into fives. 



Eaa mi , a flower cluster in which the 

 flowers are borne along the peduncle 

 on pedicels of nearly equal length. 



Bad most . like a raceme. 



RachUla, in Qramineae, the axis of a 



spikelet, on which the bractlets and 

 paleae, with their enclosed flowers, 

 are borne. 

 Rachis, the axis of a spike or raceme, 

 the prolongation of the peduncle 

 through the flower cluster; the axis 

 or midrib of a compound leaf or 

 prolongal ion of t he pet iole ; in ( ! ra- 



mineae the main ;i\is and branches 



of an inflorescence, on which the 

 spikelefs are borne. 



Eadiati . arranged around or spreading 

 from a c immon cent* c ; hearing 



rays. 



Radical, leaves are called radical 

 when inserted sn closely to the base 



