519 



INDEX TO THE GENERA 

 IN THIS VOLUME. 



Alectoria 208 



Bseorayces 108 



Calicium 85 



Cetraria 215 



CJadina 173 



Cladonia 126 



Coccocarpia 345 



Collema 39 



Colleraodium 57 



Collemopsis 77 



Coniocybe 98 



Dendriscocaulon 77 



Dirina 490 



Ephebe 27 



Ephebeia 28 



Euopsis 22 



Evernia 228 



Gomphillus 107 



Gonionema 18 



Gyrophora 324 



Lecanora 348 



Leprocaulon 123 



Leproloma 348 



Leptogidium 35 



Leptogium 62 



Lichina 31 



Lichiniza 33 



Lobaria 271 



Lobarina 270 



Hagmopsis 29 



Kephromium 282 



Pannaria 335 



Pannularia . . 340 



Parmelia . . 232 



Parmeliopsis 262 



Peltidea 277 



Peltigera 286 



Pertusaria 491 



Phlyctis 512 



Physcia 294 



Pilophorus 114 



Platysma 219 



Pterygium 33 



Pycnothelia 124 



Pyrenidlum 81 



Pyrenopsis 23 



Ramalina 186 



Ricasolia 274 



Roccella 182 



Schizoma 38 



Solorina 279 



Sphserophorus 103 



Sphinctrina 83 



Spilonema 19 



Stenocybe 97 



Stereocaulon 116 



Sticta 273 



Stictina 265 



Synalissa 36 



Thamnolia 184 



Thelotrema 513 



Trachylia 101 



Umbilicaria 322 



TJrceolaria 515 



Usnea 201 



Varicellaria . .511 



