496 



MORPHOLOGY OF THE ANGIOSPERMS 



Hypocotyl, mesocotyl incorporation, 336, 

 352 



neck adnate to, 335, 336, 340, 348, 

 351 



ontogeny, 317 



parts, 324 



as storage organ, 325 



term, loose use of, 325 



tetrarchy, 325 



transition region, 324 



variations, 325, 351, 356 



vascularization, 324, 348 

 Hypopodium, 6 

 Hypostace, 261, 276, 304, 372 



Ilex, ovule traces, 273 

 Illiciaceae, androecium, polystemonous, 

 100 



chromosome number, 429, 431 



floM^er, 405 



nodal anatomy, 405, 430 



phloem, 405 



pollen, 430 



pollination, 170, 173 



relationships, 388, 405, 422 



stamens, 109 



taxonomic position, 405 



wood, 405 

 Illicium (see Ilhciaceae) 

 Impatiens, cotyledon number, 343 

 Indehiscence, 379 

 Inferior ovary, 245-252 



anatomy, 246, 247 



appendicular theory, 245, 246 



axial ( receptacular ) theory, 245, 247 



development, axis tip hollowed, 246, 

 247, 248 

 floral appendages adnate, 246, 248 



ontogeny, 252 

 Inflorescence, 67-85 



adnation to adjacent organ, 79 



anemophilous, 173 



branched, 71 



Castuirina, 435-437 



definition, 67 



fleshy, 81 



flower, solitary, 67, 72, 75, 81, 82 



flower number, 67 



flowering sequence, acropetal (centrip- 

 etal), 70 

 basipetal (centrifugal), 70 



flowerlike, 77, 78 



fusion, 79, 80, 81 



helobialian, 440 



palm, 445, 446, 449 



phylogeny, 82, 83 



prophylls, 16 



Inflorescence, ranalian, 387, 389, 392, 

 409, 410 

 reduction, 71, 72-74, 75, 76, 77, 78, 



79-82 

 reduction in flower number, 71, 72, 



387 

 size, 67, 445 

 specialization, 409 



stamens, solitary, in compacted, 104 

 types, by order of flower develop- 

 ment, determinate ( cymose ) , 70, 

 71, 76, 82 

 indeterminate (racemose), 70, 82 



panicle, 71 

 by position on stem, 68-69 

 Integument, appendages, 256, 371, 373 

 degree of permanence, 294 

 free, 291 

 in fruit, 379 

 fusion, 259, 448 



inner, 207, 256, 257, 267, 295, 304, 

 315 

 endothelium, 260 

 vascular sheath, 267 

 nature, 259, 283, 284 

 ontogeny, 262, 264, 271 

 operculum, 276 



outer, 256, 257, 267, 295, 304, 315 

 reduction, 276 

 in seed, 370, 371, 372, 375 

 vascularization, 268, 273, 274 

 Integumentary tapetum ( endothelium ) , 



260 

 Internodes, 5, 6, 462 

 Invagination, receptacular, 247, 250 



(See aho Differential growth) 

 Involute closure {see Carpels, closure) 

 Ipomaea, ovule, 258 

 Iridaceae, androecium, 103 

 anther dehiscence, 128 

 embryo anatomy, 347, 350 

 ovary, 246 

 ovule, 266 

 7m, anther, 129 

 dehiscence, 167 

 seedling and embryo, 338, 339 

 Isanthtts, gynoecium, 192 

 Isoetes, angiosperm relations to, 364, 

 464 

 gamctophyte, 294 

 rhizomorph, 5 

 Isoetes-monocotyledon theory, 464 

 Isophysis, ovary, 246 



Jacaranda, omithophily, 172 

 Jatropha, ovule, 267 



