INDEX OF THE GENERA. 



PAGE. 



ALECTORIA, ... 40 



CETRARIA, ... 28 



CLADOKLA, ... 236 



CCENOGONIUM, . . 257 



COLLEMA, . , . 142 



CONOTREMA, . . 217 j 



CYSTOCOLETJS, . . 258 | 



ENDOCARPISCUM, . 113 j 



EPHEBE, ... 131 



ERIODERMA, . . 110 



EVERNTA, ... 38 



GYALECTA, . 217 



GYROSTOMUM, . . 228 



HEPPIA, . . . 114 



HYDROTHYRIA, . . 167 



LECANORA, ... 181 



LEPTOGIUM, . . 154 



LICHINA, ... 133 



MYRIANGIUM, . . 261 



NEPHROMA, ... 102 



OMPHALARIA, . . 138 



OMPHALODIUM, . . 260 



PAJWARIA, . . . 116 



PARHELIA, 52 



PAGE. 



PELTIGERA, ... 105 



PERTUSARIA, . . 211 



PILOPHORUS, . . 235 



PLACODIUM, . . 169 



PHYSCIA, 67 



PHYSMA, . . . 115 



PYRENOPSIS, . . 135 



PYXINE, .... 78 



RAMALINA, ... 20 



RINODINA, ... 205 



ROCCELLA, ... 19 



SCHIZOPELTE, . . 46 



SOLORINA, . . . Ill 



SPEERSCHNEIDERA, . 47 



SPILOISTEMA, ... 131 



STEREOCAULON, . . 230 



STICTA, .... 91 



THELOSCHISTES, . 48 



THELOTREMA, . . 223 



THERMUTIS, . . 130 



UMBILICARIA, . . 82 



TJRCEOLARIA, . . 222 



USNEA, 40 



