X APPENDIX. 



Placenta. That part of the ovary or fruit which bears the 

 ovules and seeds. 



Plicate. Folded into plaits like a fan. 



Plumose. Pluine-like; having fine hairs on each side, like 

 a feather. 



Polyadelphia. Having stamens united by the filaments 

 into many sets. 



Polyandria. Having many stamens. 



Polygamia. Having both hermaphrodite and unisexual 

 flowers. 



Polygynia. Having many pistils. 



Pollinia. Concrete masses of pollen. 



Pomum, Pome. A fleshy fruit like the apple, inclosing 

 several leathery or bony carpels. 



Procumbent. Lying upon the ground. 



Pruinose. Covered with a minute bloom or powder. 



Pseudocarp. Fruit including other organs in addition to 

 the ovary. 



Puberulent. Very minutely pubescent. 



Pubescent. Covered witli hairs usually short and soft. 



Pungent. Terminating in a rigid and stout point or 

 prickle. 



Pyrena. '1 he stone of a drupe. 



Pyriform. Pear-shaped. 



-quelrous. Cornered. 

 Quinate. In fives. 



Raceme. A form of inflorescence, with pedicellate flowers 

 developing from below upward upon a simple prolonged 

 axis. 



Rachis. The axis of a spike, etc. 



Radicle. The part of the embryo below the cotyledon. 



Ray. The marginal flowers in composite. 



Receptacle, The more or less expanded surface forming a 

 support for the organs of a flower or a head of flowers. 



Reflexed. Bent abruptly down or backward. 



Reniform Kidney-shaped. 



