INDEX 
451 
Dicotyl Seed, gross structure of, 217 
stems, 140, 147 
Dicotyledoneae, characteristics of, 308, 
309 
Dictyophora duplicata, 279 
Dicypellium carophyllatum, 332 
Diervilla, 400 
Differences between Gymnosperms 
and Angiosperms, 58, 59 
roots and stems, 123 
histological, between leaves of 
Dicotyls and Monocotyls, 
176 
Digitalis, 392 
purpurea, 393 
trichomes of, 107 
var. gloxinaeflora, 394 
Digitoxin, micro-chemic test for, 83 
Dionaea muscipula, 65, 67, 335 
Dioscorea, 5, 303 
villosa, 303 
Dioscoreaceae, 303 
Diosma, 349, 350 
Dittany, 350 
Division, 2 
Dodder, 124, 137 
Dog Bane Family, 384 
Dogwood Family, 378 
Dog’s Tooth Violet, life history of, 53, 
58 
Dorema Ammoniacum, 378 
Dorsoventral leaf blades, 169 
Dracena Draco, 301 
Dragon’s Blood, 300 
Drimys Winteri, 324 
Drosera, 335 
effect of mechanical stimulus in, 
67 
longifolia, 336 
intermedia, 336 
rotundifolia, 336 
Droseraceae, 335 
Drupe, 209 
fig. of, 210 
Dryopteris Filix-mas, alternation of 
generations in, 44 
comparative physiology of root, 
stem and leaf, 39, 40 
fig. of, 34 
gross structure of stem, 33 
sori and sporangia, 40 
growth of seedling into mature 
sporophyte, 44 
histology of growing apex, 36 
lamina, 38 
mature root, 36 
stem, 33 
root apex, 37 
sori and sporangia, 40 
stipe, 37 
history of gametophyte genera¬ 
tion, 41, 45 
sporophyte generation, 33, 4 1 
Dryopteris Filix-mas, origin of new 
sporophyte or diploid plant 
from fertilized egg, 44 
vascular bundles of, 35, 292 
Dryopteris marginalis ( frontispiece ), 
292 
Duboisia myoporoides, 391 
Dulcamara, 391 
Duramen, 152 
Ear fungi, 271 
Earth Stars, 279 
Earth Tongues, 265 
Ebenales, 380 
Ecballium Elaterium, 401 
Echinacea, 406 
Echinocactus, 370 
Echinocereus, 371 
Echium, 389 
Ecology, 1, 408 
Economic Botany, 2 
Ectocarpus siliculosus, 242, 243 
Ectoplasm, 39 
Egg Plant, 391 
