236 C. SKOTTSBERG 



Of the species left aside for the present, Dicranella costata (many in S. Amer.), 

 Ptychomitriiim fernande ziamun (other sp. in the Andes), Macrojuitriuin saxatile (many 

 in S. Amer.), Bartramia fernandezimia and Breutelia Masafuerae (many austral sp.) 

 may turn out to belong to an American element. The occurrence in Masatierra 

 of 8 endemic species of Thanniiinn is astonishing, for not one is quoted for South 

 America, whereas related species are found in Australia-New Zealand, Oceania and 

 Malaysia; for this reason I have referred the species in Masatierra to the Pacific 

 element. 



IV. Hepaticae. 



No handbook equal to Brotiierus' comparatively modern account of the mos- 

 ses exists of the Hepaticae. ScillFFNER's treatment of this group in the ist edition of 

 Natiarl. Pflanzenfamilien is too antiquated to be of much use. Much important infor- 

 mation is, however, found in Herzog's work {12^^ as well as in DOMiN's paper (7(5), 

 and also in this case Dr. Persson kindly helped me, but to search the voluminous 

 special literature of the last thirty years was not to be thought of. The number of 

 species given is, in many cases at least, too low, but I don't think this matters 

 very much. 



The following list is based on EVAX.S'and Herzog's papers {gj, ijo) with 

 a few alterations [iji). Several species credited to Juan Fernandez by Stephaxi 

 ijjj) t>ut not mentioned by Herzog are included here; some of them are, perhaps^ 

 identical with other species. 



Marchantiales. 



Plagiochasjua Lehm. et Lindenb. (about 20). Mostly trop.-subtrop. 



rupestre (Forst.) St. Cosmopol., also Chile. — Mt, Mf. 

 Reboulia Raddi (i). 



heniisphaerica (L.) Raddi. Cosmopol., also Chile. — ^Nlt, Mf. 

 Lunularia (Mich.) Adans. (i). 



cruciata (L.) Dumort. S. Amer., also Chile, Medit. Eur., Atl. islands, Afr.^ 

 Austral.— Mt, Mf. 



Marchantia L. (about 50). Subcosmopol., numerous trop. 



poly)noypJia L. Cosmopol., also Chile. — Mt, Mf. 



berteroana Lehm. et Lindenb. Chile south to Fueg., Falkl., St. Helena, S. Afr.,. 

 Marion I., Kerguel., Austral., Tasm., N. Zeal. — Mt, Mf. 



foliacea Mitt. S. Chile, Tasm., N. Zeal.— :\It, Mf. 



Metzgeriales. 



Rkcardia S.¥. Gray (140-150, but much higher figures are given). N. temp. 6,. 

 trop. Amer. 43, Afr. 14, trop. As. -Oceania 53, austr.-subantarct. 35. 

 fuegiejtsis Massal. S. Chile to Fueg. — Mf. 



breviramosa (St.) Evans. Falkl. ^ — Mt, Mf. 



adglutinata Evans. — Mt, Mf. 



visularis Schiffn. St. Paul and New Amsterd. Is. — Mt. 



variabilis Evans. S. Chile. — Mt. 



