824 



GLOSSARY. 



tl>e young plant ; also the first fruit produced 



o^n a raceme or spike. 

 Primordial Utricle, the Hning membrane of 



cells in their early state. 

 Prismenchyma, tissue composed of prismatical 



cells. 

 Process, any prominence or projecting part, 



or small lobe. 

 Procumbent; lying on the ground. 

 Pro-embryo, cellular body in ovary, from 



which the embryo and its suspensor are 



formed. Sometimes Pro-embryo is used for 



Proikall-us. 

 Proliferous, bearing abnormal buds. 

 Prolification, axis prolonged beyond the 



flower, bearing leaves, and ending in an 



abortive flower-bud ; seen in Rose and Geum. 

 Prone, prostrate, lying flat on the earth. 

 Propagulum, an offshoot, or germinating bud 



attached by a thickish stalk to the parent 



plant. 

 pROSENCHYMA, fusiform tissue forming wood. 

 Protandrous, or Proterandrous, stamens 



reaching maturity before the pistil. 

 pROTHALLiuM, or Pkothallus, names given 



to the first part produced by the spore of an 



acrogen in germinating. 

 pROTOGYNOus, or Proterogynous, pistil 



reaching maturity before the stamens. 

 Protoplasm^ the matter which seems to be 



concerned in the early formation of nuclei 



and cells. i 



Pruinose, covered wath a coarse granular 



secretion, as if dusted. 

 PsEUDO, false ; in Latin, Spuritts. 

 Pseudo-bulb, the peculiar aerial stem of many 



epiphytic Orchids. 

 PsEUDOSPERMOus, applied to plants bearing 



single-seeded seed-vessels, such as Achenes, 



resembling seeds. 

 Pteridographia, a treatise on Ferns. 

 Pterocarpous, having winged fruit. 

 Pubescence, short and soft hairs covering a 



surface, which is hence called Pubescent. 

 Pulverulent, covered with fine powdery 



matter. 

 Pulvinate, shaped like a cushion or pillow. 

 Pulvinus, cellular swelling at the point where 



the leaf-stalk joins the axis. 

 Punctated, applied to the peculiar dotted 



woody fibre? of Coniferae. 

 PuTAMEN, the hard endocarp of some fruits. 

 Pycnide, a papillaeform or wart-like minute 



cellular reproductive body in the thallus of 



Lichens. 

 Pyren^, stony coverings of the seeds in the 



Medlar. 

 Pyridium, same as Pome. 

 PvRiFORM, pear-shaped. 

 Pyxis and Pvxidium, a capsule opening by a 



lid. 



auADRi, in composition, means four times. 

 UADRiFARious, in four rows. 

 QuADRiFiD, four-cleft, cut down into four parts 



to about the middle. 

 Quadrijugate, having four pairs of leaflets. 



auADEiLOCULAR, having four loculaments. 

 UADRiPARTiTE, divided deeply into four 

 parts. 

 QuARTiNE, the fourth coat of the ovule, which 

 often is changed into albumen. 



QuATERNATE, leavcs comiug off in fours from 

 one point. 



Quinary, composed of five parts, or of a mul- 

 tiple of five. 



QuiNATE, five leaves coming off from one 

 point. 



Quincunx, when the leaves in the bud are five, 

 of which two are exterior, two interior, and 

 the fifth covers the interior with one margin, 

 and has its other margin covered by the ex- 

 terior. Quincuncial, arranged in a quincunx. 



QuiNQUE, in compound words means five. 



QuiNQUEFiD, five-cleft, cut into five parts as 

 far as the middle. 



QuiNQUELOCULAR, having five loculaments. 



QuiNQUEPARTiTE, divided deeply into five 

 parts. 



QuiNTiNE, the fifth coat of the ovule, other- 

 wise called the embryo-sac. 



Race, a permanent variety. 



Raceme, cluster, inflorescence in which there is 

 a primary axis bearing stalked flowers. 



Racemose, flowering in racemes. 



Rachis, the axis of inflorescence ; also applied 

 to the stalk of the frond in Ferns, and to the 

 common stalk bearing, the alternate spikelets 

 in some Grasses. 



Radiant, applied to flowers which form a ray- 

 like appearance, as seen in Umbelliferae and 

 in Viburnum, etc. 



Radiate, disposed like the spokes of a wheel ; 

 also applied to the florets of the ray or cir- 

 cumference of the capitula of Compositae. 



Radical, belonging to the root, applied to 

 leaves close to the ground, clustered at the 

 base of a flower stalk. 



Radicle, the young root of the embryo. 



Radius, the ray or outer part of the heads of 

 Composite flowers. 



Ramal, belonging to the branches. 



Ramenta, the scales or chaff of Ferns. 



Ramose and Ramous, branched. 



Raphe, the line which connects the hilum and 

 the chalaza in anatropal ovules. 



Raphides, crystals found in cells, which are 

 hence called Rapkidian. 



Receptacle, the flattened end of the pedimcle 

 or rachis, bearing numerous flowers in_ a 

 head ; applied also generally to the extremity 

 of the peduncle- or pedicel. 



Reclinate, curved downwards from the hori- 

 zontal, bent back up. 



RectembryejE, the embryo straight in the axis 

 of the seed. 



Rectinervis and Rectivenius, straight and 

 parallel veined. 



Rectiserial, leaves disposed in a rectilinear 

 series. 



Recurved, bent backwards. 



Reduplicate, edges of the sepals or petals 

 turned outwards in Eestivation. 



Regma, seed-vessel composed of elastic cocci, 

 as in Euphorbia. 



Regular, applied to an organ the parts of 

 which are of similar form and size. 



Reliqui^, remains of withered leaves attached 

 to the plant. 



Reniform, in shape like a kidney. ■ 



REPAND/having a slightly undulated or sinuous 

 margin. 



