76 



THE AMERICAJS- MONTHLY 



[Mar., 



c Oblong decolorate, Spores colorlss, Th. foliaceous, — Coniinued. 



X Apo. immersed in the thallus 63 Endocarpon 



w Apo. from scutelhcform becoming black all over and 



lecideoid 12 Pyxine 



w Apo. urceolate-scutellseform, spores ellipsoid and oblong, 



bi-pluri!ocular or muriform plnrilocular 37 Thelotrema 



V Apo. zeorine or biatorine 31 Lecanora 



V Apo. globular opening by a pore at the summit, immersed in 



