Page:Darwin - The various contrivances by which orchids are fertilized by insects (1877).djvu/314




 * Aceras anthropophora, 26; pollen-tubes, 258
 * longibracteata, 26
 * , monstrous flowers, 255
 * Acianthus exsertus, 90
 * fornicatus, 90, 280
 * sinclairii, 90; fertilised by insects, 280
 * Acontia luctuosa with pollen-masses, 31
 * Acropera, pollinia of, 154, 156; upper petals, 276
 * loddigesii, 166
 * luteola, 166; vessels of, 239
 * Adaptations, how far special, 267; diversity of, 282
 * Aerides, movement of poUinia, 156; secretion of nectar, 265
 * cornutun, 265
 * odorata, 158
 * virens, 156
 * Amici, on number of pollen-grains in Orchis morio, 278
 * Anderson, Mr., on Dendrobium, 142; on the Epidendrea, 147
 * Angræcum, viscid matter in, 251
 * distichum, 154
 * eburneum, 155
 * sesquipedale, 154, 162, 282; nectary of, 265
 * Antennæ of the rostellum of Catasetam, 184, 187
 * Anthers, rudimentary, 240
 * Apostasia, 248
 * Arethuseæ, 80
 * Auricles, or papillæ, rudimentary, 241, 242


 * Babington, Prof., on the rostellum, 255
 * Baillon, M., on Catasetum, 191
 * Barkeria, 146.
 * Bateman, Mr., obligations to, 105, 162; on Cycnoches, 224.
 * Battershy, Dr., obligations to, 106
 * Bauer, Mr., on pollen-grains in Cephalanthera, 80, 82; on pollen-masses of Bletia, 143
 * Bee Ophrys, 52
 * Beer, J. G., on Catasetum, 197; on Cyonoches, 224
 * Bees with attached pollinia, 30
 * Belt, Mr., on Angræcum sesquipedale, 165
 * Bentham on monstrous flowers of Orchis pyramidalis, 38
 * Bird's-nest Orchis, 125
 * Bolbophyllum, 274; upper petals, 276
 * barbigerum, 138
 * cocoinum, 137
 * cupreum, 137; nectary of, 265
 * rhizophoræ, 137
 * Bonatea speciosa, 71, 76; vessels of, 244; modified structure, 264; caudicle, 361
 * Bond, Mr. F., on moths with attached pollinia, 30; obligations to, 72, 75
 * Bracteæ, secreting nectar, 266
 * Brassia, movement of pollinia, 156
 * Bree, Mr., on seed of Epipactis latifolia, 278
 * Brongniart, M., on secretion of nectar, 41; on Catasetum, 196; spiral vessels in Orchids, 235; on Uropedium, 240
 * Bronn, Prof., on Stanhopea devoniensis, 171; classification of organic beings, 264
 * Brown, C, on Sobralia macrantha, 91
 * , Robert, on the fertilisation of Orchids, 3; viscidity of stigma, 13; Ophrys apifera, 54; utriculi of the stigma, 202; homologies of Orchids, 234, 235, 237; rostellum of Orchids, 247; Apostasia, 248;