506 



MORPHOLOGY OF THE ANGIOSPERMS 



Phyllosporeae-Stachyosporeae theory, 18, 

 104, 213, 216, 217, 248, 286, 464 

 Phyllotaxy, 91 

 Physocarpus, carpel, 186, 188, 189, 190 



hypanthium, 249 

 Phtjtelepims, anther wall, 169 



dioecism, 446, 449 

 Phytolaccaceae, perisperm, 375 

 Phyton theory, 21 

 Phytons, 3, 21 

 Pileole (see Coleoptile) 

 Pimelea, inflorescence, 72, 78 

 Pinguicula, cotyledon, 359 



microsporangium, 115 

 Pinus, fruit dehiscence, 378 



pollination to fertilization time, 309 



short shoot, 6 

 Piper, carpel anatomy, 212 



microsporangia, 115 



ovules, 271 

 Piperaceae, anther wall, 140, 141 



endosperm, 375 



flowers, 221 



ligules, 15 



microsporangium, 115 



ovule, 260, 269 



perisperm, 375 



pollen, 162 



proembryo, 311 

 Piperales, 435 



ethereal oil cells, 430 

 Pistia, cotyledon position, 342 

 Pistil, use of tenn, 90, 186 

 Pit, pitting {see Xylem) 

 Pitcairnia, embryo, 332 

 Pittosporum, transmitting tissue, 201 

 Placenta, definition, 204 



half-, 205 



nature, 217 



reduction, 277, 279, 280 



U-type, 213, 214 

 Placentation, 204-216 



evolutionary history, 214-216, 426, 442 



in free carpels, 204, 205 



in syncarpous gynoecia, 233—239 

 Placentation types', axile, 210, 233, 234, 

 235, 236, 240, 270 



basal, 190, 206, 208, 212, 238, 239, 

 240, 438, 442 



free central, 234, 236, 237, 238, 240, 

 270, 277 



gentian, 239 



laminar, 190, 206, 208, 209, 211, 234, 

 240, 386, 404, 414, 416, 418, 

 427, 438, 439 



median, 213, 240 



parietal, 210, 235, 236, 240, 270 



Placentation types, reduction in, 214—216, 

 270 



subbasal, 206, 212 



submarginal, 190, 206, 208, 209, 240, 

 270, 386, 403, 418, 427, 442 



suspended, 206, 239, 240 



U-type, 213, 214 

 Placentoids, 143, 144 

 Placospermum, leaves, 10 



perianth, 92 

 Plant body, 2-61 



anatomy, 21-30 



gametophyte, 2, 301 



gross structure, 3, 4 



habit, 3, 435 



ontogeny, 30^3 



parts, 2, 4 



primary, 21 



primitive, 4, 421 



secondary, 22 



sporophytic body, 2 

 Plantaginaceae, anemophily, 173 

 Plantago, anthers, 173, 169 



inflorescence, 72 



phvllodes, 19 



pollen, 162 

 Phtanus, achene, 470 



carpel, 189 



inflorescence, 73, 74 



node, 25 



perianth, 90 



pollen, 162 



pollination, 170 



xylem, 468 

 Platijstemon, placentation, 210 

 Plctiromeia, rhizomorph, 5 

 Plumbago, ovule, 267 

 Plumule, definition, 326, 355 



development within seed, 355, 371 



emerging, 339, 358 



pseudolateral, 4, 322, 323, 328, 356, 

 357, 462 



terminal, 322, 323, 325, 329, 336, 357, 

 462 

 Poa, polyembryony, 346 

 Podium, 276 



Podocarpaceae, embryo, 313 

 Podopht/Uiim, carpels, 415, 416 



cotyledon fusion, 329, 344, 359, 360 



gynoecium, 415 



placentation, 415 



pseudomonocotyledony, 344 



relationships, 413-415 



syncarpy, 415 



teaching value, 415 

 Podostemonaceae, endosperm absent, 303 



vesselless, 45 



