COLLECTED IN THE FALKLAND ISLANDS ETC. 233 



Lecanora punicea, Ach. 



On the bark of trees. Sandy Point (Strait of Magellan). 



Sparingly gathered. 



Tribe Pertttsariei. 



Pertusaria coccophora (Mnt.). 



On dead stumps and stems of trees. Columbine Cove (west coast of 

 Patagonia). 



Apparently not uncommon, but very rarely fertile. Apothecia 

 crowded; spores 8na>, 0-048-0062 millim. long, 0-027-0034 

 millim. thick. 



Tribe Thelotremei. 



Thelotrema subtile, Tuck. 

 On the bark of trees. Sandy Point. 



Only two small fragments gathered. 



Tribe Lecideei. 



Lecidea spadicomma, Nyl. 9 sp. n. " Th alius albidus vel albido- 

 ochraceus, lsevigatus rimulosus (crassit. 05 millim.) ; apothecia 

 spadiceo-fusca plana (latit. 12-24 millim.), immarginata, a thallo 

 circumscissa (ita spurie lecanorina), intus pallida et linea infera 

 fusca; sporae 8nae, iacolores, ellipsoideae, longit. 024-0*027 millim., 

 crassit. 011-0 014 millim., paraphyses graciles, epithecium lutescens. 

 hypothecium sat tenuiter infuscatura. Iodo gelatina hymenialis in- 

 tensive caerulescens, dein thecae sordide violacee tinctae. 

 Est species elegans e stirpe Lecidea contigua>> faciei alienae. Sper- 

 matia acicularia recta longa, longit. 0*020-0-026 millim., crassit. 

 00005-0-0006 millim."— Nyl. in litt. 



Ad saxa granitica. In the bed of a stream, near Eden Harbour (west 

 coast of Patagonia). 



Sparingly. April 1868. 



ii 



Tribe Graphldei. 



Stigmattdium graphidiodes, Cromb., sp. n. Thallus albido- 

 ochraceus effusus tenuis rimosus : apothecia nigra linearia (latit. 0*5 

 millim., longit. 1-2 millim.), epithecio nonnihil concaviusculo im- 

 presso (nigro), intus obscura : sporae non visae, saltern rite evolutae. 



Supra saxa granitica. On a hill, Swallow Bay (Fuegia). 



December 30th, 1868. Very sparingly. 



Chiodecton cerebriforme, Mnt. 

 n maritime rocks. Otter Islands (west coast of Patagonia). 



Very sparingly, and the apothecia rarely rightly developed. 



