552 ALEXANDER W. EVANS 



The next important contribution to our knowledge of Juan Fernandez 

 Hepaticae was made by MiTTEN in 1884 and constituted a part of Hemsley's 

 Challenger Report.^ Most of the specimens listed were found by E. G. Reed, 

 a collector sent to the islands by W. Saunders; the others were collected by 

 H. N. Moseley, botanist of the Expedition. In addition to SympJiyogyna Hoch- 

 stetteji and Marchantia Berteroana, MiTTEN reported the thallose Riccardia 

 multifida (L.) S. F. Gray. A specimen bearing this name is in the Mitten 

 Herbarium at the New York Botanical Garden and is listed in the present 

 report under R. breviramosa, which resembles the northern R. multifida in many 

 important respects. 



Nearly thirty years later, in 1911, Stephani published a report on the 

 Hepaticae of Juan Fernandez, which was based on collections made by C. 

 Skottsberg, during the year 1908. This report is included in his memoir, 

 »Die Lebermoose», which was issued as the second number of the »Botanische 

 Ergebnisse der Schwedischen Expedition nach Patagonien und dem Feuerlande 

 1907— 1909. »^ Skottsberg's collections are considerably larger than those 

 made by the earlier explorers and include material from the island of Masa- 

 fuera, as well as from the island of Masatierra, to which the earlier collectors 

 had restricted their attention. Stephani reports fifty species of Hepaticae from 

 the islands, of which the following nine are thallose: Aneiira breviramosa Steph., 

 Antlioceros Skottsbergii Steph., Marchantia cepJialoscypha Steph., Metzgeria 

 chilensis Steph., Fossombronia fernandeziensis Steph., Reboulia hemisphaerica 

 (L.) Raddi, SympJiyogyna Hochstcltcri Nees & Mont., S. integerrima Steph., and 

 S. lanceolata Steph. Through the kindness of Dr. H. MOLLER, of the Natural 

 History Museum (Riksmuseum) at Stockholm, and of Professor O. JUEL, of the 

 University of Upsala, the writer has had the privilege of studying most of the 

 specimens upon which Stephani's reports were based. The results of these 

 studies, which necessitate certain revisions and a few reductions to synonymy, 

 are given in the descriptive part of the present paper. Stephani's additions, 

 together with the earlier records, represent a net total of ten thallose Hepaticae 

 for the islands. 



In 1916— 17 Dr. Skottsberg, accompanied by his wife, Mrs. Inga Skott.s- 

 BERG, again visited the Juan Fernandez group and remained there for a period 

 of five months. They explored both Masatierra and Masafuera thoroughly for 

 Hepaticae and brought back a collection which is far more extensive and 

 representative than all the earlier collections put together. The present report, 

 which is based on the thallose species of this collection, increases the number 

 of species now definitely known from the islands to twenty-seven. The collec- 

 tion includes also a very few sterile specimens which are too incomplete for 

 identification. When a species is marked with an asterisk (*) it represents an 

 addition to the flora of Juan Fernandez; when an island is marked with an 

 asterisk it means that the species in question is reported from that island for 

 the first time. 



1 Bot. Challenger Exped. 1': 84—89 (1884). 



* Kungl. Svenska Vet. Akad. Handl. 46": 1—92. t. i — 35 (191 1] 



