GLOSSARY OF BOTANICAL TERMS. 



XXV11 



Pistillate, having pistils but no sta- 

 mens. 



Placenta, 114. 

 Plane, flat. 

 Plicate, plaited, folded like a ruffle 



or fan. 



Plumose, feathery, leather-like. 

 Plumula, 174. 

 Pod, 154. 

 Pollen, 104. 



Pollen-masses or pollinia, 107. 

 Poli/gamo-diazcious, having perfect 



and imperfect flowers on distinct 



plants. 

 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, 77. 

 Polyphyllous, having many leaves, 



applied to the calyx. 

 Polysepalous, 76. 



Polyspermous, having many seeds. 

 Pome, 158. 



Porrected, extended forward. 

 Pouch, 154. 

 Pramorse, blunt at the end, as if 



bitten off. 

 Prickle, 27. 

 Prismatic, having several parallel 



flat sides. 

 Process, a protuberance or projecting 



part. 



Procumbent, lying on the ground. 

 Produced, extended or lengthened 



out. 

 Proliferous, an umbel or flower is 



said to be proliferous when it has 



smaller ones growing out of it. 

 Pseudopinnate, falsely or imperfectly 



pinnate, not resolving at any time 



into separate leafets; as the Pea, 



Vetch, &c. 

 Puberulent, covered with a minute 



pubescence. 

 Pubescence, a general term for the 



hairy covering of plants. 

 Pubescent, clothed with short weak 



hairs. 



Pulp, the soft, juicy, cellular sub- 

 stance found in berries and similar 



fruits. 

 Pulverulent.^ dusty, composed of 



powder, or appearing as if covered 



with it. 



Punctate, appearing as if pricked full 



of small holes, or dots. 

 Puncticulate, having very minute 



punctures. 

 Pungent, sharp-pointed, or prickly 



at the apex ; acrid. 

 Putamen, a hard shell. 

 Pyramidal, tapering upwards. 

 Pijriform, shaped like the fruit of a 



pear. 



Quadrangular, 4-angled. 

 Qiiadrifarious, in four rows or direc- 

 tions, pointing or facing four ways. 

 Quadrifid, 4-cleft. 

 Quaternate, four together. 

 Quinate, five together. 



Raceme, 62. 



Racemose, flowering in racemes. 



Rachis, the main stem of a compound 

 peduncle, along which the pedicels 

 are arranged, as in the Grasses; 

 also the midrib of the divided frond 

 in Ferns. 



Radiant or radiate, often applied to 

 a cluster or head of flowers when 

 those of the circumference or ray 

 are long and spreading, and unlike 

 those of the disk. 



Radical, growing immediately from 

 the root. 



Radicating, sending out roots at the. 

 nodes or joints of the stem. 



Radicle, 175. 



Ramealj belonging to the branches. 



Ramenta, the scales or persistent re- 

 mains of leaves or other parts of 

 the plant. 



Ramentaceous, covered with r -amenta. 



Ramose, branching. 



Raphe, the linear ridge on one side 

 of the anatropous or inverted ovule, 

 formed by the adhesion of a part 

 of the funicle. 



Ray, the diverging florets or petals 

 which form the outside of radiate 

 flowers, cymes, and umbels. 



Receptacle, 83. 



Reclined or reclinate, bending over, 

 with the end inclining toward the 

 ground. 



Recurved, curved backwards. 



Reduplicate, with the edges folded or 

 turned outwards. 



Rejlexed, bent backwards, more than 

 recurved. 



