GLOSSARY OF BOTANICAL TERMS USED. xxxi 



PISTILLODE : a rudimentary pistil. 



PLACENTA : the part of the ovary that bears the ovules. 



PLANO-CONVEX : flat on one side and convex on the other. 



PLICATE : folded into plaits, usually lengthwise. 



PLUMOSE : feathery or feathered. 



PLUMULE : the primary leaf-bud of an embryo. 



POLLEN : the fertilizing powdery, granular or waxy bodies produced 



in the anthers. 



POLLINIA : a pollen mass, specially in orchids. 

 POLLINIFEROUS : bearing or containing pollen. 



POLY- : a prefix indicating the presence of many of the affixed objects. 

 POLYGAMOUS : with both bisexual and unisexual flowers on the same 



or on different individual plants. 

 POSTICOUS : on the back-part ; next to the axis. 

 PREMORSE : as though bitten off, i. e. the end truncated and more or 



less irregular. 



PROCUMBENT : lying along the ground. 

 PROLIFEROUS : bearing progeny as offshoots. 

 PRUINOSE : with a waxy-powdery secretion ; bloom. 

 PUBERULOUS : slightly hairy with very short hairs. 

 PUBESCENT : clothed with soft, rather short hairs or down. 

 PULVINUS : an enlargement close to the insertion of a leaf or the 



swollen base of the petiole. 



PUNCTATE : marked with dots, depressions or glands. 

 PUNGENT : ending in a rigid and sharp point ; a sharp taste or smell. 

 PUSTULATE : pimply ; as though blistered. 



PUTAMEN : the shell of a nut ; the hardened endocarp of a stone-fruit. 

 PYRENE : a nutlet ; one of the small stones of a drupe or similar fruit. 

 PYRIFORM : pear-shaped. 



QUADRATE : squared. 



RACEME : a centripetal inflorescence with lengthened axis and equally 



pedicellate flowers. 

 RADIANT : when the flowers on the outer rim of an umbel are larger 



than the inner. 



RADICAL : arising from the root or its crown. 

 RADICLE : the rudimentary root of the embryo. 

 RAMULUS : branchlet. 

 RAPHE : the ridge formed by the adherent funicle along the side of 



some ovules. 

 RAPHIDES or RHAPHIDES : needle-shaped crystals in the cells. 



