INDEX 



495 



Helobiales, perianth, 438, 440 

 placentation, 208, 442 

 pollen, 164 



relationships, of dicotyledons with, 

 418, 439 

 within the order, 439 

 resemblances, of Ceratophtjllum to, 

 438 

 of Ranimculaceae and Nymphaea- 

 ceae to, 440 

 seeds, 439 

 stamens, 437, 438 

 staminodia, 104 

 stipules, 15, 439 

 Helosis, flower, 277 

 Hemerocallis, leaf, 19 

 Hepatica, intraseminal growth, 319 

 Herbaceae, 464 

 Herbs, cambium, 59, 60 

 characters, advanced, 421 



primitive, 435 

 fibers in woody, 50 

 fruits, 380 

 occurrence in some primitive families, 



413, 415, 432, 434, 435, 442 

 panicles, 82 

 phloem, 56 

 reduction, 77 

 steles, 24, 59 

 vessel, 45, 49, 439 

 xylem, 54 

 Hermaphroditism, 387 

 Hernandiaceae, ethereal oil cells, 430 

 fasciculate androecium, 420 

 relationships, 420 

 stamens, 420 

 Hevea, entomophily, 173 

 Heivordia (see Isophysls) 

 Hibbertia, androecium, 98, 105, 426, 

 432, 433 

 arils, 373 

 calyx, 433 



description, 432^33 

 Hower specialization, 98 

 Hibiscus, dehiscence, 165 



ovule, 262 

 Hicksbeachia, inflorescence, 77 



leaves, 10 

 Hillebrandia, carpel, 203 

 pollination, 189 

 stamens, 109 

 Hilum, 256, 370, 371 

 Himantandraceae, androecium, 96 

 anther-sac wall, 126, 139 

 carpel, 187, 387, 399, 400 

 ethereal oil cells, 430 

 flower, 82, 387, 400 



Himantandraceae, leaves, 12, 401 



microsporangia, 115, 116, 123, 125, 



394, 401 

 ovule, 400 



perianth, 89, 400, 401, 424, 425 

 phloem, 424 

 pollen, 429 

 pollination, 154, 170 

 relationships, 400, 401, 422, 430 

 short shoots, 400 



stamen, 110, 112, 133, 400, 425, 469 

 staminodia, 104, 391, 400, 401 

 syncarpy, 400 

 vascular supply, cortical, 391, 393, 



400, 401 

 wood, 400 

 Hippocastanaceae, root system, 320 

 Hippuris, androecium reduction, 104 

 Histogen theory, 30, 35, 36 

 Homoxyleae, vesselless taxon, 45, 431 

 Hook, 41, 42 

 Hordcum, embryo, 350 

 Houstcmia, 258, 282 

 Htimulus, anther-sac wall, 136, 141 

 Hyacinthtis, embryo, 339 

 leaf, reduced, 19 

 seedling, 339 

 Hijbanthus, inflorescence, 70, 71 

 Hydnoraceae, ovule, 278 

 "Hydrastidiaceae," proposal of, 414 

 Hydrastis, carpel, 93, 188 

 ovules, 271, 413 

 phloem, 414 



relationships, 413, 414, 434 

 stamen, 109 

 xylem, 413, 414, 423 

 Hydrocharitaceae, carpel, 189, 224 

 coenocarpy, false, 232 

 embryo, 319, 358 

 gynoecium, 439 

 leaf, 13, 16, 18 

 ovule, 270 



placentation, 208, 211, 438, 439 

 Hydrocotijle, leaf, 12 

 Hydrophily, 169, 172 

 Hydrophytes, ovule reduction, 276 

 Hyoscyamus, stomata on fruit, 379 

 Hypanthium, 249, 411 

 Hypericaceae, placentation, 236 



stamens, centrifugal development, 107 

 fascicled, 97, 98 

 reduction, 105 

 stele, 24 

 Hyphaene, branching habit, 443 

 Hypocotyl, definition, 4, 5, 322, 323, 

 355 

 dicotyledonous, 347, 361 



