GLOSSARY. 225 



Peduncle : a flower-stalk, whether of a single flower or of a flower-cluster ; p. 78. 



Pe'dancled, Pedunculate : furnished with a peduncle. 



Peltate : shield-shaped : said of a leaf, whatever its shape, when the petiole is 



attached to the lower side, somewhere within the margin ; p. 59, fig. 102, 178. 

 Pendent : hanging. Pendulous : somewhat hanging or drooping. 

 Penicillate : tipped with a tuft of fine hairs, like a painter's pencil ; as the stig* 



mas of some Grasses. 



Penta- (in words of Greek composition) : five ; as 

 Pentdgynous : with five pistils or styles ; p. 116. 

 Pentdinerous : with its parts in fives, or on the plan of five. 

 Pentdndrous : having five stamens ; p. 112. Pentdstichous : in five ranks. 

 Pepo: a fruit like the Melon and Cucumber; p. 128. 

 Perennial: lasting from year to year; p. 21. 

 Perfect (flower) : having both stamens and pistils ; p. 89. 

 Perftiliate: passing through the leaf, in appearance ; p. 67, fig. 131, 132. 

 Perforate : pierced with holes, or with transparent dots resembling holes, as an 



Orange-leaf. 

 Perianth : the leaves of the flower generally, especially when we cannot readily 



distinguish them into calyx and corolla ; p. 85. 

 Pericarp : the ripened ovary ; the walls of the fruit , p. 127. 

 Pericdrpic : belonging to the pericarp. 



Pe'richwth : the cluster of peculiar leaves at the base of the fruit-stalk of Mosses. 

 Perichce.tial : belonging to the perichaeth. 

 Perigonium, Pvrigone ; same as perianth. 

 Periyynium : bodies around the pistil ; applied to the closed cup or bottle-shaped 



body which encloses the ovary of Sedges, and to the bristles, little scales, 



&c. of the flowers of some other Cyperacese. 



Perigynous : the petals and stamens borne on the calyxj p. 104, 111. 

 Peripherie : around the outside, or periphery, of any organ. 

 Pe'risperm : a name for the albumen of a seed (p. 136). 



Peristome : the fringe of teeth, &c. around the orifice of the capsule of Mosses. 

 Persistent : remaining beyond the period when such parts commonly fall, as the 



leaves of evergreens, and the calyx, &c. of such flowers as remain during 



the growth of the fruit. 

 Personate : masked ; a bilabiate corolla with a projection, or palate-, in the throat, 



as of the Snapdragon ; p. 106, fig. 210, 211. 

 Petal: a leaf of the corolla; p. 85. 

 Petaloid : petal-like ; resembling or colored like petals. 

 Pe'tiole : a footstalk of a leaf; a leaf-stalk, p. 54. 

 Petioled, Petiolate : furnished with a petiole. 



Petidlulate : said of a leaflet when raised on its own partial leafstalk. 

 Phcendgamous, or Phanerogamous: plants bearing flowers and producing seeds; 



same as Flowering Plants ; p. 177, 182. 

 Phyllddium (plural phyllodia] : a leaf where the blade is a dilated petiole, as in 



New Holland Acacias ; p. 69. 



Phyttotdxis, or Phyllotaxy : the arrangement of leaves on the stem ; p. 71. 

 Physiological Botany, Physiology, p. 3. 

 8&F 11 



