808 
114, 115, 119, 120, 126, 127, 187, 156, 
289, 290, 292, Figs. 26, 27, 28. 
Herbarium mould (Eurotium), 92. 
Hermaphrodite flowers, 196. 
Heterocyst, 35. 
Hetercecism, 88, 89, 95. 
Heterosporous Pteridophytes, 136, 
148, 149, 150, 151, 152, 155, 157, 158, 
178, 179, 225, 226, 293, Figs. 38, 39. 
Heterospory, 148, 149, 151, 152, 156, 
226, 292. 
Hickory, 235, 238. 
Holdfast (of Algez), 67, 68, 69, 263, 
286. 
Homosporous Pteridophytes, 148, 149, 
151, 153. 
Honey-locust (Gleditschia), 212. 
Honeysuckle (Lonicera), 215, 249. 
Hooks (of fruits), 29, 243, 295. 
Hop, 278. 
Hordeum murinum, 243, Fig. 54. 
Horse-tail (see also ‘‘ Equisetum’’), 
128, 139, 140, 224, Fig. 36. 
Horse-chestnut, 270, Fig. 59. 
Host, 80, 82, 88, 89, 181, 279. 
Hound’s-tongue (Cynoglossum), 243, 
Fig. 54. 
Huckleberry, 214. 
Humming-birds, 208, 247, 249. 
Humus plants, 279. 
Huxley, 3. 
Hyacinth, 190. 
Hydrodictyon (see also 
net’’), 43, 44, Fig. 7. 
Hydrogen, 2, 8, 19. 
Hydropterides (see also ‘‘ Water- 
fern’’), 150, 151, Fig. 39. 
Hygroscopic movements, 283. 
Hymenium, 95. 
Hymenophyllacez (see also “ Filmy 
ferns ’’), 126, 127. 
Hypha, 87, 97, 181. 
“ Water- 
I 
Ice-plant (Mesembryanthemum), 275. 
Indian corn, 269. 
Indian-pipe (Monotropa uniflora) , 12, 
205, 279, 288. 
INDEX 
Indian turnip (Arisema), 185, Fig. 
45. 
Indusium, 135, Fig. 35. 
Inferior ovary, 189, 190, 191, 193, 
194, 210, 211, 215, 218, Figs. 46, 47, 
51, 53. 
Inflorescence, 185, 193, 215, 216. 
Infusoria, 8. 
Inorganic bodies, 2. 
Insects, 28, 99, 178, 189, 190, 194, 195, 
206, 208, 211, 242, 244, 245, 247, 254, 
294. 
Insect-fungi (Entomophthoracezx), 
86, 242. 
Insectivorous plants, 205, 257, 258. 
Integument (of ovule), 164, 165, 169, 
178, 202. 
Internal cell-division, 7, 285. 
Internode, 61, 62, 140, 141. 
Iris, I. family, 189, 191, 197, Fig. 46. 
Irish moss (Chondrus crispus), 71, 
263. 
Isoétes, 135, 149, 150, 151, 152, 155, 
163, 179, 184; I. echinospora, 150, 
Fig. 39. 
Isocarpe, 213, 214, 218, 219, Fig. 52. 
Isosporez (see ‘‘ Homosporous Pteri- 
dophytes’’). 
Ivy (Hedera), 211. 
J 
Jamaica, 136, 232. 
Japan, 162, 166, 236. 
Joint-fir (see also ‘‘ Gnetacez’’), 161. 
Juncacee (Rush family), 189. 
Jungermanniacee, 119. 
K 
Kalmia (see also “Mountain laurel’’), 
253. 
Karyokinesis (indirect nuclear divi- 
sion), 6, 62, Fig. 3. 
Keel (of papilionaceous flower) , 250, 
252, Fig. 56. 
Kelp, 20, 63, 67, 68, 69, 71, 78, 263, 
Figs. 17, 18. 
