466 APPENDIX 



{NuTtibers refer to paragraphs.) 



Perfect. Flowers having both gynoecium and androeoium. 



Perfoliate. Leaf-blade enclosing the stem. 121, Fig. 109. 



Perianth. The floral envelopes: the "leaves of the flower." 145. 



Pericarp. The ripened ovary: seed-vessel. 291. 



Perigynium. The perianth-like body enclosing the akene in the carices. 297. 



Perigynous. Said of flowers in which the gynoecium sits in the calyx-tube, 



upon which tube other parts of the flower are borne. 170. 

 Peristome. The margin of fringe or teeth about the oriflce of the capsule o. 



mosses. 4286. 

 Petal. One of the parts of a corolla: one of the inner (and usually coloredf 



members of a biserial perianth. 145. 

 Petaloid. Resembling a petal. 255. 

 Petiole. The stalk or stem of a leaf. 87. 

 Petiolnle. The stalk of a leaflet. 90. 



Phanerogam. One of the class of flowering or seed-bearing plants. 427. 

 Phenology. The study of the relationship of local climate to the annual periods 



of animals and plants. 526, 526a. 

 PlurifoHolate. With many leaflets. 104a. 



Phyllodium. A petiole which resembles a leaf-blade, and performs the func- 

 tions of foliage. 115a. 

 Phyllotaxy. The arrangement of leaves, branches, or flowers upon the 



stem. 70. 

 Phytogeny. Genealogy: natural history of a race. 423c. 

 Phyton. As conceived by the writer, the smallest part of root, stem or leaf, 



which, when severed, may grow into a new plant ; a potential cutting. 479. 

 Pileus. The cap or top of mushroom-like fungi. 429. 

 Pinna. A primary leaflet in pinnately compound leaves. 99. 

 Pinnate. Parts arranged on opposite sides of a rachis. 94. 

 Pinnatifid. Pinnately lobed. 104c. 



Pinnatisect. Said of pinnate leaves divided into segments. 104e. 

 Pinnule. Secondary leaflet of a fern frond (426a): a secondary leaflet in 



pinnately compound leaves. 99. 

 Pistil. That part of the flower which bears the ovules : it ripens into a fruit. 



142. 

 Pistillate. Said of flowers which have gyncecium, but no androecium. 152c. 

 Placenta. Place of attachment of ovules in the ovary. 158. 

 Plaited. Folded together sidewise into parallel folds: plicate. 60, Fig. 62. 

 Plane. Flat: said of leaves and other expanded bodies which do not curl or 



twist. 

 Plicate. Plaited: folded together sidewise into parallel folds. 60, Fig. 62. 

 Plumose. Feather-like. 

 Plumule. The bud of the embryo, usually lying between the cotyledons. 3896. 



