DERIVATION OF THE FLORA AND FAUNA 415 



pascuana Ther. ex Broth. Related to P. crocea (Hpe) Jaeg. Ind., Ceylon, 

 Java, Philipp., E. Austral., N. Zeal., Kermadec Is., Fiji). 



Fabronia Raddi (Fabroniaceae). 90-100, half of them Amer.; trop.-subtrop. 



macroblepharoides Broth. Related to F. macroblepharis Schwaegr. (Brazil); 

 other related sp. in Afr. and Austral. 



Rhacopilum Palis. 



cuspidigeruni Schwaegr. Norfolk I., N. Caled., Samoa, Hawaii. 



Besides, Brotiierus mentions Weisia sp. and Macromiirhini sp. 



Fourteen species are reported, 9 of them endemic (64.3 %), a high figure, 

 but there can be no doubt that only a part of the mosses has been collected, 

 and very likely the proportion of endemics will be reduced. Of greater interest 

 are the endemic aquatic species of Campylopus of the crater lakes, possibly relicts 

 from an era when the island was larger and higher than now and enjoyed a more 

 humid climate. Probably many mosses and other cryptogams disappeared with 

 the forest groves. Of the known species Campylopus inlrojiexus, Weisia flavipes 

 and Rhacopilum cuspidigerum have a southern distribution, Philonoiis laxissima 

 is palaeotropical and Bryum argcntejim cosmopolitan and perhaps anthropochorous; 

 the endemic species are supposed to have tropical relatives. 



IV. Hepaticae (/jo). 



Frulla7iia Raddi. 



lageiiifera Schwaegr. Known before from the type locality only, said to be 

 the Falkland Is., but this statement is subject to doubt; possibly Ins. Marianae 

 is meant instead of Maclovianae. 



Conditions are not favourable to hepatics, but more species will be found. 

 A Lejeunea was collected, but the material seems to have been lost (I.e. 699). 



V. Lichenes (2^7). 



My thanks are due to Dr. A. H. Magnusson and Dr. R. Santesson, who 

 helped with information on the distribution. 



Arthonia Ach. About 500, the majority trop.-subtrop. 



fuscescens Fee. Apparently only reported once before (trop. Amer.). 

 Opegrapha Humb. About 280, mostly warmer climates. 



paschalis Zbr. 

 Grapliis (Adans.) Ach. 



lineola Ach. Trop.-subtrop. 

 Diploschistes Norm. About 30, cold to temp, regions, trop. mountains. 



ariactinus ILhx. Described from Japan. 



scruposus (L.) Norm. Wide-spread N. and S. temp. 

 Heppia Naeg. About 40, mostly warm and dry regions. 



Guepini Nyl. N. Amer., Eur. 



