INDEX 



503 



Nymphaeaceae, endosperm, 375 

 Eupomutia, resemblances to, 395 

 flowers, 416 

 gynoecium, 416, 417 

 helobialian resemblances in, 440 

 microsporangia, 116, 117, 121, 123 

 nectar, 153 

 ovary, 246 

 ovule, 269 



ovule number, 215, 270 

 perianth, 89, 120, 416, 417 

 perisperm, 375 

 placentation, 208, 210, 404, 416, 418, 



427 

 pollination, 154, 170, 173, 398 

 pseudomonocotyledony, 418 

 relationships, 412, 418, 422, 463 

 root, primary, 463 



system, 320 

 sporophylls, 426 



stamens, 107, 110, 120, 121, 122, 132, 

 133, 150, 399, 416, 417, 425, 469 

 staminodia, 104, 151, 417 

 taxonomic position, 344 

 xylem, 431 



Oak (see Quercus) 



Obdiplostemony, dedoublement theory, 

 101, 102 



displacement theory, 101, 102 



intercalation theory, 100, 102 



reduction theorv, 100, 103 



split-petal theorv, 102 

 Obturator, 258, 265, 267, 304 

 Ochnaceae, anther dehiscence, 165 

 Oedera, inflorescence, 72 

 Oenotliera, seed, 372 

 Olacaceae, ovule, 258, 278 

 Olax, ovule, 278, 279 



placenta, 279 

 Oldenlandia, nucellar type, 282 

 Oleaceae, anemophily, 173 



leaf reduction, in, 8, 10 



ovular vascular system, 273, 274 

 Onagraceae, leaf, stipular, 14 



microsporangia, 114 



phloem, internal, 58 



placentoids, 143 

 Ophioglossaceae, ovule resemblance to 

 sporangia, 287 



sporophyte development, 365 

 Optintia, ovary, 247 



ovule, 267 



polvembryony, 346 

 Orchid (see Orchidaceae) 

 Orchidaceae, androecium reduction, 103, 

 104 



Orchidaceae, anther, 130 

 dehiscence, 169 



embryo, 313, 325, 332, 346, 351, 355, 

 357 



gynostemium, 106 



megaspore, 292 



ovule, number, 270 

 structure, 271 

 undeveloped at pollination, 272 



placentoids, 143 



pollination to fertilization time, 309 



pollinia, 160, 161 



seed, 371 



transmitting tissue, 202 

 Ornithogalum, inflorescence, 72 



stipulate stamens, 12 

 Ornithophily, 169, 172 



(See also Pollination) 

 Orobanchaceae, anther dehiscence, 169 



embryo, 355, 358 



seeds, 371, 372 

 Orontiiim, cotyledon, 329 



embryo, 319 



seed, 329 

 Orthotropous, 266, 267, 268, 269 

 Ortjz^, embryo, 322, 348 



inflorescence, 71 



mesocotyl, 341 



seedling anatomy, 348 

 Ostnja, cymules, 76 



stamens. 111, 131 

 Ostjris, flower, 277 



ovule, 278, 279 



placenta, 278, 279 

 Ottelia, embryo, 356 

 Ovary, adaptations to ornithophily, 172 



anatomy, 237 



fusion, 243 



nature, 187, 251 



pseudoinferior, 247, 438 



syncarpous, 210, 242, 270 



wall, 267 



(See also Inferior ovary) 

 Ovule, anatomy, 207, 257, 267, 272-276 

 traces, 272, 273, 284 

 vascular system, in angiosperms, 

 284, 391 

 in gymnosperms, 275 



basal, 270, 447 



Castmrina, 436, 437 



crassinucellate, 260, 261, 290, 291, 

 295, 315 



development, time of, 272 



dillenialian, 433 



fertilization, 304 



form, 284 



fusion, 259, 260 



