228 REV. J. M. CROMBIE OX THE LICHENS 



Platysma ulophyllum (Ach.). 



On the trunks of trees. Sandy Point. 



Very sparingly and infertile, associated with other lichens. 

 Platysma glaucum, f. coralloidea (Wallr.). 



On decayed trunks amongst mosses. Sandy Point. 



Sterile. 



Tribe Pabmeliei. 

 Parmelia revoluta (File.). 



On the bark of trees. Puerto Bueno. 



Very sparingly and infertile, and otherwise atypical. Thallus 

 CaCl+. 



P. peruviana, Nyl. ( = Lechl. PL Per. no. 2/2/). 

 On the bark of trees. Eden Harbour. 



Very sparingly and sterile. Thallus K +, Ca CI 



P. Cunninghami, Cromb., sp. n. Similis Parmelice saocatili, sed 

 thallus crasse imbricatus, lsevis, apicibus laciniarum sorediosis. 

 Apothecia non visa. The soredia are of a reddish colour in the 

 specimens seen ; but this is evidently only accidental. 



On the trunks of old trees. Island Harbour. 



Very sparingly gathered and infertile. April 16th, 1868. 



P. Delisella, Nyl., sp. n. "Est quasi P. prolixa (f. Delisei) 

 minor, laciniis adnatis saepissime magis discretis (latit. circiter 0*4-1 

 millim.), sporis minoribus (longit. 0-008-0009 millim., crassit. 

 0005-0006 millim.). Spermatia bifusiformia, longit. circiter 00045 

 millim., crassit. vix 0-0005 millim. Thallus K =, CaCl±, turn 

 medulla obsolete erythrinose nonnihil tincta."— Nyl. in litt. 



Ad saxa schistosa. River Gallegos (east coast of Patagonia). 



Very sparingly gathered. February 1869. 

 P. lugubris {Pers.). 



On trunks of trees. Sandy Point, fertile ; Port Grappler, Philip Bay, 

 infertile. 



Spores 0-007-0-009 millim. long, 0005-0-006 millim. thick. 

 Spermatia bifusiform, 0-0045 millim. long, 0*0005 millim. thick. 



P. CINCINNATA (Ach.). 



On dead twigs and trunks of trees. Halt Bay, Port Gallant. 



Sparingly and infertile. 



P. dispora, Nyl., sp. n. "Similis Parmelue Cincinnati, Ach., sed 

 saepe nonnihil major, thallo albido, sporis binis majoribus (longit. 

 0052-0064 millim., crassit. 0-027-0044 millim.). Receptaculum 

 apotheciorum (latit. 3-8 millim.) rugosum. Spermatia acicularia (vel 



11*11 *l • V 1 *% ,-wv » .-«. 



Nyl. in litt. 



005 millim., crassit. 00005 



