Contents 



PART II 



PAGE 



LICHENS, GENERA AND SPECIES 



Genus Cetraria 79 



Cetraria lacunosa 79 



Cetraria hlandica 79 



Genus Usnea 80 



Usnea barbata 80 



Usnea tricbodea 81 



Genus Thelochistes . 81 



Xanihoria parietina 81 



Genus Parmelia . 81 



Parmelia conspersa 82 



pbysodes 82 



saxatilis 83 



perlata . 83 



caperata . 83 



Genus Physcia . 84 



Pbyscia leucomela 84 



Genus Umbilicaria ... ... 84 



Umbilicaria pusiulata 84 



vellea 85 



Dillenii 85 



Mublenbergii .... 85 



Genus Peltigera ... .... 85 



Peltigera canina 86 



apbtbosa . 86 



polydactyla 86 



Genus Sticta 86 



Sticta pulmonaria 87 



amplissima 87 



Genus Stereocaulon 88 



Stereocaulon pascbale 88 



" tomentosum 88 



Genus Cladonia. . 88 



Cladonia pyxidata 89 



fimbriata 89 



cristatella 89 



rangijerina (typical) .... 90 



cornucopioides 90 



ix 



