GLOSSAEY. 



823 



Phyllaries, the leaflets forming the involucre 

 of Composite flowers. 



Phyllodium, leaf-stalk enlarged so as to have 

 the appearance of a leaf. 



Phyllody, change of an organ into true leaves. 



Phylloid, like a leaf. 



Phyllolobe^, cotyledons green and leafy. 



Phylloptosis, the fall of the leaf. 



Phyllotaxis, the arrangement of the leaves 

 on the axis. 



Phyllum, leaf, in composition Pkyllo and 

 Pkyllous ; in Latin Folium. 



Physiognomy, general appearance, without 

 reference to botanical characters. 



Physiology, Vegetable, the study of the func- 

 tions of plants. 



Phytogenesis, the development of the plant. 



Phytography, the description of plants. 



Phytology, the study of plants. 



Phyton, a name given by Gaudichaud to the 

 simple individual plant, as represented by a 

 leaf. In words derived from the Greek, 

 Phyton and Phyto mean plant. 



Phytozoa, moving filaments in the antheridia 

 of Cryptogams. 



PiLEORHiZA, a covering of the root, as in 

 Lemna. 



PiLEUS, the cap-like portion of the Mushroom, 

 bearing the hymenium on its under side. 



Pilose, provided with hairs ; applied to pappus 

 composed of simjile hairs. 



PinakenchymAj, tissue composed of tabular 

 cells. 



Pin-eyed, applied to the flower of Primula, 

 having long styles with stigma visible at the 

 top of the floral tube. 



Pinna, the leaflet of a pinnate leaf. 



Pinnate, a compoimd leaf having leaflets ar- 

 ranged on each side of a central rib. 



PiNNATiFiD, a simple leaf cut into lateral seg- 

 ments to about the middle. 



PiNNATiPARTiTE, a simple leaf cut into lateral 

 segments, the divisions extending nearly to 

 the central rib. 



Pinnules, the small pinnae of a bipinnate or 

 tripinnate leaf. 



Pistil, the female organ of the flower, composed 

 of one or more carpels ; each carpel being 

 composed of ovary, style, and stigma. 



Pistillate, and Pistillifeeous, applied to a 

 female flower or a female plant. 



PiSTiLLiDiUM, the female organ in Crypto- 

 gams. 



Placenta, the cellular part of the carpel bear- 

 ing the ovule. 



Placentary, a placenta bearing numerous 

 ovules. 



Placentation, the formation and arrange- 

 ment of the placenta. 



Platys, large or broad ; in composition Platy; 

 in Latin Latus and Late. 



Pleion, several, in composition Pleio ; in Latin 

 Pluri. 



Pleioteache^, spiral vessels with several 

 fibres united. 



PlenuS, when applied to the flower, means 

 double. 



Pleueenchyma, woody tissue. 



Pleurocarpi, Mosses with the fructification 

 proceeding laterally from the axils of the 

 leaves. 



Pleuroehize^, Cruciferous plants having the 



radicle of the embryo applied to the edges of 



the cotyledons, which are called A ccumbent. 

 Plicate and Plicative, plaited or folded IDte 



a fan. 

 Plumose, feathery, applied to hairs having two 



longitudinal rows of minute cellular pro- 

 cesses. 

 Plumule, the first bud of the embryo, usually 



enclosed by the cotyledons. 

 Pluri in Latin words means several. 

 Plurilocular, having many loculaments. 

 PoDETiuM, a stalk bearing the fructification in 



some Lichens. 

 Podocarp, a stalk supporting the fruit. 

 Podogynium, a stalk supporting an ovary. 

 PoDOSPEEM, the cord attaching the seed to the 



placenta. 

 PoGON, beard ; in Latin Barba. 

 PoLLARD-TEEES, cut down SO as to leave only 



the lower part of the trunk, which gives off 



numerous buds and branches. 

 Pollen, the powdery matter contained in the 



anther. 

 Pollen-tube, the tube emitted by the pollen- 

 grain after it is applied to the stigma. 

 PoLLiNiA, masses of pollen found in Orchids 



and Asclepiads. 

 Polyadelphous, stamens united by their fila- 

 ments so as to form more than two bundles. 

 PoLYANDROUS, stamcus above twenty. 

 PoLYCARPic, plants which flower and fruit 



many times in the course of their life. 

 PoLYCOTYLEDONOUS, an embryo having many 



cotyledons, as in Firs. 

 Polyembryony, having more than one em- 

 bryo. 

 Polygamous, plants bearing hermaphrodite as 



well as male and female flowers. ' 



Polygyncecial, applied to multiple fruits 



formed by the united pistils of many flowers. 

 Polygynous, having many pistils or styles. 

 Polymorphous, assuming many shapes. 

 POLVPETALOUS, a corolla composed of separate 



petals. 

 POLYPHYLLOUS, a calyx or involucre composed 



of separate leaflets. 

 Polys, many, in composition Poly; in Latin 



M-ulius. 

 PoLYSEPALOUS, a calyx composed of separate 



sepals. 

 PoLYSPERMAL, Containing many seeds. 

 Pome, a fruit like the Apple and Pear. 

 PoEES of the leaf, same as Stomaia, 

 PoEOOS VESSELS, same as Pitted or Dotted 



vessels, 

 POERECT, extended forwards. 

 Posterior, applied to the part of the flower 



placed next the axis ; same as Superior. 

 Posticus, same as Extrorse ; applied to 



anthers. 

 Pouch, the short pod or silicle of some Cru- 



ciferje. 

 Pous, PoDOS, a foot or stalk, in composition 



Podo ; in Latin Pes, Pedis. 

 Pe-efloration, same as /Estivation. 

 Pr^foliation, same as Ver>iaiion. 

 Premoese, bitten, applied to a root or rhizome 



terminating abruptly, as if bitten off. 

 Prickles, hardened epidermal appendages, of 



a nature similar to hairs. 

 Primine, the outer coat of the ovule. 

 Primordial, the first true leaves given off by 



