519 



INDEX TO THE GENERA 

 IN THIS VOLUME. 



Page 



Alectoria 208 



Baeomyces 108 



Calicium So 



Cetraria 215 



Cladina 173 



Cladonia 126 



Coccocarpia 34o 



Collema 39 



Colleraodium 57 



Collemopsis 77 



Coniocybe 9^ 



Dendriscocaulon ' ' 



Dirina 490 



Ephebe 27 



Ephebeia 28 



Euopsis 21, 



Evernia 228 



Gomphillus 107 



Gonionema 18 



Gyrophora 324 



Lecanora 318 



Leprocaulon 1-3 



Leproloma 348 



Leptogidmm 35 



Leptogium 62 



Licbina • 31 



Licbiniza 33 



Lobaria 271 



Lobarina 270 



Magmopsis 29 



^^Tepbromium 282 



Pannaria 335 



Pannularia 340 



Page 



Parmelia . . 232 



Parmeliopsis 262 



Peltidea 277 



Pelligcra 286 



Pertusaria 491 



Phlyctis 512 



Physcia 294 



Pilophorus H^ 



Platysma 219 



Pterygium 33 



Pycnotbelia 124 



Pyrenidium 81 



Pyrenopsis 23 



Ramalina 186 



Eicasolia 274 



Roccella 182 



Scbizoma 38 



Solorina 279 



Sphserophonis 103 



Sphinctrina 83 



Spilonema 19 



Stenocybe 97 



Stereocaulon 116 



Sticta 273 



Stictiua 265 



Synalissa 36 



Thamuolia 184 



Tbelotrema 513 



Trachylia 101 



Umbiiicaria 322 



Urceolaria 515 



Usnea 201 



Yaricellaria 511 



