OKNITIIOOEPIIALUS. 



INDEX. 



SPKENGEL. 



299 



Ornithocephalus, 160 

 Ovaria of OrohMe, 284 

 Oxenden, Mr. G. C, obligations to, 

 25 ; on Epipactis purpurata, 102 



Parfitt, Mr., on attached poUinia, 31 

 Parker, Mr. R., obligations to, 129 

 Pedicel of poUinium, 253 ; elasticity 



of, 283 

 Percy, Dr., analysis of labellum of 



Warrea, 270 

 Peristylus mridis, secretion of nectar, 



43, 63 ; rostellum, 255 

 Petals, uses of, 274 

 Phaius, 146 



grandifolius, 280 



PTialanopsis, viscidity of stigma, 



153; movement of poUiuia, 159; 



labellum, 276 



amabilis, 159 



grandiflora, 159 ; projection of 



labellum, 269 

 riatanthera, 75 



chlorantha, 69 



dilatata, 77 



■ — -flava,ie,n 



■ Iwolceri, 75 



Tiyperborea, 76; self-fertile, 291 



PleurothalKs ligulata, 135 



■ ■ prolifera, 135 



Pogonia opMoglossoides, 86 

 Pollen-masses, rudimentary in Mono- 



chanfhus, 201 ; gradation of, 257, 



2S8 

 Pollen-tubes emitted from anther, 



258 

 Pollinia, movements of, in Orchil 



mascula, 12-15; in 0. pyrami- 



dalis, 21 ; of the Vandese, 154 ; 



of Catasetum, ejection of, 184; 



attachment to rostellum, 251 ; 



gradation, 2.=i7; movements, 271 

 Pterostylis, nectary flf, 232 



longiflora, 87, 89 



trullifoUa, 86, 88 ; imperfect 



fertilisation in New Zealand, 280 



Eodgers, Mr., obligations to, 129; 

 on Myanthus and Monoelmrdhws, 

 196; Eecretion of nectar in Or- 

 chids, 265 ; in Vanilla, 266 



Modriguezia secunda, 159 



suaveolens, movement of pol- 

 linia, 1,56, 159 



Eohrbach, Dr., on Epipogium gme- 

 lini, 103 



Rostellum, a single organ in the 

 Ophrese, 45 ; of the Vandese, 

 150; aborted, 242; gradation of, 

 247 ; of Apostasia, 248 ; diversity 

 of structure, 250 ; crest of, in 

 the Ophrese, 255 ; in Catasetum, 

 256 



Rucker, Mr., obligations to, 129, 

 ISO, 192, 208 



Baccolahium, viscidity of stigma, 



153, 156 

 Saint-Hilaire, A. de, on pollen of 



Orchids, 259 

 Sarcanthus, labellum of, 276 



parisldi, 142 



teretifoUus, pollinia of, 154, 



156; viscidity, 268 

 Scheinsaffblumen, 37 

 Schomburgk, Sir R., on Catasetum, 



196 

 Scott, Mr., on flowers of Aeropera, 



168, 172 ; of Gongora, 169 ; nec- 

 tar-receptacle, 269; number of 



seeds in capsule of Aeropera, 278 ; 



prepotency of pollen, 289 

 Scudder, Mr., on Pogonia opliio- 



glossoides, 86 

 Secretion of nectar, 36. 229, 265 

 Seeds, production and number of, 



276, 277 

 Selenipedium palmifoUum, 232 

 Self-fertilisation, summary on, 293 

 Sepals, uses of, 274 

 Serapias cordigera, 27 

 Sexes of Orchids, 196 

 Smith, Sjr James, on position- of 



flowers in Malaxis, 1 29 

 , Mr. Gr. E., on bees visiting 



the Bee Ophrys, 55 

 Sdbralia macrantlia, 91 

 Bophronitis, 146 

 Spider Ophrys, 50 

 Spirantlies australis, 114 ; labellum, 



275 ; self-fertile, 291 

 autumvalis, structure of flower, 



106-114 ; vessels of, 289- 



eemua. 111 



gracilis. 111 



Sprengel, 0. K., on fertilisation of 



Orchis militaris, 36 ; secretion 



of nectar by Orchis, 36 ; on JSpi- 



