INDEX AND GLOSSARY. 



295 



Orchid Family, 227. 



Orchidaceae 227. 



Orchis, 41, 227 ; described, 280. 



Ordeal beans, 149. 



Ordeal poison of Madagascar, 186. 



Organic elements, 14. 



Organs of nutrition, 17. 



Organs of reproduction, 17. 



Orontium, 217. 



orthotropous, applied to ovules 

 when the organic base of a 

 straight nucleus (where it is 

 united to the coat or coats of 

 the ovule) coincides with the 

 hilum, and the micropyle is at 

 the further extremity. 



Oryza, 239, 242. 



Osier, 215. 



Osmunda, 255. 



oval, 65. 



Ovary, 8. 



ovate, 65. 



ovoid, egg-shaped ; applied to 

 solids. 



Ovule, 7, 79. 



Oxalis, 139. 



Oxygen Gas, 14. 



Pale, "45 ; Pales of the common 



receptacle, 176. 

 Palm Family, 279. 

 palmatifid, 66. 

 palntatipartite, 67. 

 Panax, 165. 

 Panicle, 73. 

 paniculate, 73. 

 Pansy, 127. 

 Papavenceae, 119. 

 Paper Mulberry, 208. 

 Papilionaceae, 145. 

 papilionaceous, 145. 

 Pappus, 176. 

 Papyrus, 237. 

 Paraguay Tea, 143. 

 Paraphyses, microscopic filaments. 



associated with the thecae of 



certain Cryptogams. 

 Parasites, plants which prey upon 



the juices of other plants. 

 Parenchyma, tissue of short cells. 

 parietal, 81. 

 Paris, 225. 

 Parsley, 164. 

 Parsnip, 164. 



Pea, 25, 145 ; described, 276. 

 pectinate, with comb-like teeth or 



lobes. 



pedate, digitate with the lateral 



leaflets springing from the 



branches of a short fork of the 



petiole. 

 pedatifid, pedatifariite, applied to 



a simple leaf divided on the 



pedate plan. 

 pedicel, the stalk of each single 



flower of a two- or more 



flowered inflorescence. 

 Pedicularis, 192. 

 Peduncle, 5. 

 Pelargonium, 139. 

 Peloria, the regular form of a 



flower normally irregular. Of 



L,inaria t 193. 

 peltate, 70. 

 Penny-royal, 195. 

 penta-, five in composition. 

 pentamerous, applied to flowers 



with the parts in fives. 

 pentandrous, 54. 

 Pentstemon, 193. 

 Peppermint, 195. 

 perennial, lasting several years, 



or indefinitely. 

 perfohate, 69. 

 Perianth, the envelopes of a flower, 



collectively. In practice, applied 



to the envelopes of the flower of 



Monocotyledons and to the 



envelope of monochlamydeous 



flowers, 42. 

 Pericarp, 82. 

 Perigynium, 237. 

 pengynous, inserted around the 



ovary ; applied to petals and 



stamens, 25. 

 Perisperm, albumen originating 



outside the embryo-sac. Often 



applied to albumen irrespective 



of its place of origin. 

 Peristoine, 262. 

 Perithecium, a nearly closed, or 



quite closed cavity containing 



thecae in Cryptogams. Applied. 



to the closed apothecia of some 



Lichens. 



Periwinkle Family, 185. 

 persistent, 20. 

 personate, bilabiate, with the lips 



closed. 



Peruvian Bark, 170 

 petaloid, petal-like, or corolla-like. 

 Petaloideae, 51, 221. 

 Petals, 6. 

 Petiole, 4. 

 Petiolule, the petiole of a leaflet. 



