Grimmia pulvinata, under- 

 ground buds, 172. 



Grimmia tricophylla, proto- 

 nema, 173. 



Grossularieae, 470. 



Gruinales, 469 ; floral dia- 

 gram, 456. 



Guard-cells, 156. 



Gunnereae, stem-structure, 

 466. 



Guttiferae, 469. 



Guttulina rosea, amoeboid 

 bodies in, 1 5 note. 



Gymnadenia, polyembryony, 

 402. 



Gymnadenia Conopsea, Fig. 

 321. 



Gymnoascus, 101, 104; fruc- 

 tification, 1 02 ; sexual or- 

 gans, 101. 



Gymnocarpous Basidiomy- 

 cetes, 132. 



Gymnocarpous lichens, 120. 



Gymnogramme leptophylla, 

 adventitious shoots, 189, 

 200 ; prothallium, 200. 



Gymnospermae, 309, 310; 

 apical growth, 312; em- 

 bryo, 311; flowers, 312; 

 histology, 342; leaf, 314 

 note ; ovule, 310; pollen, 

 310 ; seed, 311. 



Gymnosporangium (Roeste- 

 lia), 131. 



Gymnostachys, Fig. 372. 



Gymnostomous (Mosses), 

 186. 



Gymnostomum, capsule, 1 86. 



Gymnostomum rupestre, 

 stem, 167. 



Gynaeceum, 303, 370. 



Gynandrae, 445. 



Gynobasic style, 379. 



Gynophore, 359 note. 



Gynostemium, 359. 



Haemodoraceae, 443, 444. 

 Halidrys, 72. 

 Halimeda, 30. 

 Halimeda Opuntia, Fig. 13. 

 Haloragidaceae, 470. 

 Haplolaeneae, 154. 

 Haplomitrium, 144. 

 Haplomitrium Hookeri, 154. 

 Haustoria^ 87, 88, 92. 

 Head-cell (capitulum) in 



Characeae, 58. 

 Hebenstreitia, endosperm, 



461. 

 Hedera Helix, inflorescence, 



407 ; roots, 451. 

 Hedwigia ciliata, stem, 167. 

 Hedychium, Fig. 368. 

 Heiianthus, increase in size, 



INDEX. 



450 ; growth in thickness, 

 462. 



Heiianthus annuus, epider- 

 mis, 464. (Fig. 321.) 



Helleborus, exine, 367; fruit, 

 427; nectaries, 307, 351, 

 381; perianth, 350; sta- 

 mens, 360. 



Helleborus cupreus,nucellus, 

 381. 



Helleborus odorus, acyclic 

 flowers, 412 ; flowers,42i. 



Helobiae, 445. 



Helvelleae, 112. 



Hemerocallis, embryo-sac, 

 441 ; inflorescence, 409. 



Hemerocallis flava, 409. 



Hemerocallis fulva, 409. 



Hemicyclic flowers, 412. 



Hemitelia, 227. 



Hemitelia gigantea, prothal- 

 lium, 200. 



Hepaticae, 143, 144 ; anthe- 

 ridia, 149; apical region, 

 146; archegonium, 149; 

 asexual propagation, 147 ; 

 divisions, 153 ; embryo, 

 142; epidermis, 145; 

 growth and branching, 

 146, 147; leaves, 145; 

 scales, 145 ; sexual gene- 

 ration, 146 ; sexual organs, 

 141, 148 ; sporogonium, 

 142, 151 ; vegetative body, 

 144. 



Heppia, 124. 



Heracleum pubescens, Fig. 



Hermaphrodite, 303. 



Herminium Monorchis, 276 

 note. 



Hesperidium, 429. 



Heterocysts, 20, 22. 



Heteroecious (metoecious) 

 of parasites, 128. 



Heterogony, 405. 



Heteromerous Lichens, 117. 



Heterosporous Equisetineae, 

 195, 272. 



Heterosporous Filicineae, 

 194, 228 ; asexual gene- 

 ration, 232 ; classification, 

 244 : divisions, 194 ; his- 

 tology, 244; leaves, 233; 

 roots, 236; sexual gene- 

 ration, 229; sporangia, 

 237, 241; sporocarps, 

 237, 240; stem, 233. 



Heterosporous Lycopodia- 

 ceae, 196, 281. 



Heterosporous Vascular 

 Cryptogams, 189. 



Heterostyly, 405. 



Hibiscus, fruit, 420. 



501 



Hildebrandtia, 74. 



Hilum, 430. 



Himanthalia, 70, 72. 



Himanthalia lorea,dioecism, 

 72. 



Himantidium,auxospores,i9. 



Hippia, 124. 



Hippocastanea, floral dia- 

 gram, 456 ; flowers, 423. 



Hippocrateae, 470. 



Hippuris, inflorescence, 41 1 ; 

 floral whorl, 349 ; ovule, 

 382 ; plerome, 302 ; vas- 

 cular bundle, 462. 



Hippuris vulgaris, ovary, 378. 

 (Fig.^272.) 



Holargidium, floral diagram, 

 416. 



Homoiomerous Lichens, 1 17. 



Homologies in Vascular 

 Cryptogams and Phanero- 

 gams, 193 note. 



Homology of pollen-grain in 

 Gymnosperms, 300 note. 



Homosporous Equisetineae, 

 195,256; antheridia, 257; 

 archegonia, 258 ; asexual 

 generation, 258; branches, 

 264 ; elaters, 268 and note" 

 forms of tissue, 270 ; fossil 

 forms, 272 ; germination, 

 256 ; leaves, 259 ; prothal- 

 lia,256; roots, 264; sexual 

 generation, 256 ; sperma- 

 tozoids, 257 ; sporangia, 

 266; spores, 268; vege- 

 tative propagation. 



Homosporous Filicineae 

 (Ferns), 194, 197 ; adven- 

 titious buds, 212; an- 

 theridia, 202 ; apical cell, 

 210; apogamy, 206; 

 archegonia, 203 ; asexual 

 generation, 203 ; cotyle- 

 don, 206 ; branching, 211, 

 215; divisions, 194; em- 

 bryo, 204 ; full-grown fern, 

 208 ; fundamental tissue, 

 220; germination, 198; 

 glands, 222; hair-struc- 

 tures, 215; histology, 219; 

 leaves, 206, 209,213; phyl- 

 lotaxis, 210; prothallium, 

 198, 199, 230 note\ rhi- 

 zoids, 198 ; root, 206, 214, 

 215; sexual generation, 

 197 ; sexual organs, 198 ; 

 sporangia, 191, 216, etc.; 

 spore, 204; stem, 206, 

 210 ; taxonomy, 227 ; vas- 

 cular bundles, 222, etc. 



Homosporous Lycopodia- 

 ceae, 189, i9 6 > 2 74 5 an- 

 theridia and archegonia, 



