Page:Darwin - The various contrivances by which orchids are fertilized by insects (1877).djvu/316

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*Dendrobium chrysanthum, structure of, 138–142; nectary, 265
 * formosum, 142
 * speciosum, partially sterile, 281
 * tortile, 142
 * Descent, lines of, 262–265
 * Dickie, Prof., obligations to, 124
 * Disa, secretion of nectar, 265
 * cornuta, 78
 * grandifiora, 77; partially self-sterile, 281
 * macrantha, 78; partially self-fertile, 290
 * Disc, viscidity, of, in the Ophreæ, 43; in Catasetum, 190; double in the Ophreæ, 254; of Gymnadenia conopsea, 272
 * Disperis, secretion of nectar, 265
 * Duchartre, M., on Catasetum and Myanthus, 196
 * Dyer, Mr. Thiselton, obligations to, 175


 * Epidendreæ, 142; few seed capsules produced, 281
 * Epidendrwm cochleatum, viscid secretion of, 249
 * floribundum, 146; viscid secretion, 249
 * glaucum, 146
 * Epipactis, vessels of, 239; viscidmatter, 251
 * latifolia, 100, 101; pollen, 259; fertilised only by wasps, 282; use of knob of anther, 287
 * microphylla, 102
 * palustris, structure of flower, 93–100; labellum, 275
 * purpurata, 102
 * rubiginosa, 102
 * viridiflora, 102; self-fertile, 291
 * Epipogium gmelini, 103
 * Eulophia viridis, 156; nectary of, 269
 * Evelyna, nectary of, 265
 * carivata, 146; vessels of, 239; clinandrum, 241


 * Farrer, T. H., obligations to, 46; on Bee Ophrys, 55; Peristylis viridis, 63
 * Fertilisation, summary on, 290
 * Fertility of English Orchids 33
 * Fitzgerald, R. D., on Pterostylis longifolia, 89; Caladenia dimorpha, 89; Acianthus fornicatus, and exsertus, 90; Vanilla aromatica, 91; Spiranthes australis, 115; Thelymitra carnea and longifolia, 127; numbers of Orchideæ collected near Sydney, 279; self-fertilisation of Thelymitra carnea, 280; Dendrobium speciosum, 281
 * Flowers, use of external envelopes, 274
 * Fly Ophrys, 46
 * Frog Orchis, structure of flower, 62; secretion of nectar, 63


 * Galeandra funkii, 155
 * Gärtner on viscid matter of stigma, 249; pollen-grains in Orchids, 288
 * Gerard, M. M., pollinia adhering to longicorn beetle, 16
 * Glossodia, 237
 * Gongora, labellum of, 276
 * atro-purpurea, 169
 * maculata, 168
 * truncata, 169
 * Goodyera, vessels of, 239; caudicle in a nascent condition, 260
 * discolor, 105
 * pubescens, 105
 * repens, 103, 105
 * Gordon, Rev. G., obligations to, 103
 * Gosse, Mr., on self-fertilised seeds of Epidendreæ, 147, 148
 * Gradation of organs, 247
 * Gray, Prof. Asa, on Gymnadenia tridentata, 68; Platanthera, 75; Goodyera repens, 105; Spiranthes gracilis and cernua; 111; Cypripedium, 229, 230, 235
 * Gymnadenia, viscid matter, 251
 * albida, 43, 68
 * conopsea, transplanted, 32; secretion of nectar, 40, 43; structure of flower, 65; vessels, 238, 239; rostellum, 255; movements of pollinia, 271; disc, 272
 * odoratissima, 68
 * tridentata, 68; self-fertile, 291


 * Habenaria bifolia, 78; secretion of nectar, 40, 43; viscid matter, 251