Index of Genera. 



PAGE 



Cheilanthus 244 



Chironia . 59 



Chlamydomonas 75, 491 



Chroococcus 65, 569 



Cladophora 524 



Clematis 176 



Cleorae 35 



Cliffortia 174 



Closterium 84, 544 



Coccinea 211 



Cocconeis 70, 587 



Coceonema 73 



Codon 220 



Coelastrum 79, 512 



Coelidium 246 



Coleochaete 537 



Golpias 265 



Commiphora 205 



Conium 213 



Convolvulus 161 



Corallocarpus 211 



Corrigiola 1G3 



Corydalis 177 



Cosmarium 85, 550 



Crassula 46 



Crocyllis 215 



Crotalaria 252 



Cryptolepis 178 



Cucumis 210 



Cuscuta 162 



Cyclotella 69, 585 



Cylindrocystis 84, 541 



Cylindrospermum 578 



Cymbella 595 



Cymbopogon 227 



Cymatopleura 75, '599 



Cynanchum 182 



Cynodon 238 



Cyperus 224 



Cyphia 449 



D. 



Dactylococcus 78 



Danthonia 230 



Datura 270 



Denticula 69 



Dianthus 194 



Diascia 264 



Dichothrix 581 



Digitaria 227 



Dinoflagellata 605 



Diosma 203 



Diplachee 237 



Diploneis 588 



Disa 139 



Disperis 139 



Dodonaea . .- 208 



Drosera 176 



E. 



Ecballocystis 494 



Ecdysichlainys 76 



Ectadium 179 



Ecttboellia 226 



Ehretia 221 



Ehrharta 240 



Elaeodendron . . . 206 



Emex 162 



Enneapogon 239 



Enteromorpha 81 



Entoplocamia 242 



Epithemia 595 



Eragrostis 237 



Eremia 132 



Erica 131 



Erodium 199 



Erythrophysa. ....... 208 



Euastrum 547 



Euclea 219 



Euchlora 247 



Eudorina 491 



Eudorinella 492 



Euglena 600 



Eunotia 70, 585 



E. 



Festuca 243 



Ficinia 223 



Fimbristylis 223 



Fingerhuthia 241 



Flagellata 600 



Fragilaria 69 



Frankenia 160 



Freylinia 266 



Frustulia 588 



Furiena 223 



G. 



Galenia 155 



Galicorema 169 



Galium 217 



Gisekia 157 



Gloeocapsa 570 



Gloeocystis 76 



Gomphonema 594 



Gomphosphaeria 64, 571 



Gomphonema 72 



Gomphostigma 135 



Gongrosira 535 



Grewia 208 



Grielum 174 



Grisbachia 132 



Gunnera 175 



Gymnogramme 243 



