204 PHY 



wings, and the lower one the keel, as the pea. Mostly louiui m .ne 

 class Diadelphia. 



Papil'lose. Covered with protuberances. 



Pippus. The down of seeds, as the dandelion ; a feathery appendage. 

 See Egret. 



Parasil'ic. Growing on another plant, and deriving nourishment 

 from it. 



Parerichyma. A succulent vegetable substance; the cellular sub- 

 stance ; the thick part of leaves between the opposite surfaces; the 

 pulpy part of fruits, as in the apple, &c. 



Partial. Used in distinction to general. 



Parti' lion. The membrane which divides pericarps into cells, called 

 the dissepiment. It is parallel when it unites with the valves where 

 they unite \vith each other. It is contrary or transverse when it 

 meets a valve in the middle or in any part not in its suture. 



Parted. Deeply divided : more than cleft. 



Patens. Spreading, forming less than a right angle. 



Pau'ci. Few in number. 



Pec'tinate. Like the teeth of a comb, intermediate between fimbriate 

 andpinnatifid. 



Palate. Having a central leaf or segment and the two side ones 

 which are compound, like a bird's foot. 



Ped'iccl. A little stalk or partial peduncle. 



Pcdun'de. A stem bearing the flower and fruit. 



Pcl'lide. A thin membranous coat. 



Pellu'cid. Transparent or limpid. 



Peltate. Having the petiole attached to some part of the under side 

 of the leaf. 



Pendant. Hanging down, pendulous. 



Peri tilled. Shaped like a painter's pencil or brush. 



Peregri'nus. Foreign, wandering. 



Percn'nial. Lasting more than two years. 



Pcrfo'lialc. Having a stem running through the leaf; differs from 

 connate in not consisting of two leaves. 



Per 'j "orate. Having holes as if pricked through; differs from punc- 

 tate, which has dots resembling holes. 



Pe'ri. Around. 



Per'ianth. A sort of calyx. 



Per'icarp, (from peri, around, and karpos, fruit.) A seed vessel 01 

 whatever contains the seed. 



Pcrig'ynous, (from peri, around, and gynia, pistil.) 



Peris'perm, (from peri, around, and sperma, seed.) Around the seed 



Permanent. Any part of a plant is said to be permanent when it re- 

 mains longer than is usual for similar parts in most plants. 



Persis'tent. Not falling off. See Permanent. 



Per'sonatc. Masked or closed. 



Pe'tal. The leaf of a corolla, usually coloured. 



Pe'tiole. The stalk which supports the leaf. 



Pfonog'amous. Such flowers as have stamens and pistils visible, in- 

 cluding all plants except the cryptogamous. 



Physiology, (derived from the Greek.1 A discourse of Nature 



