A. W. Evans — Arrangement of Genera of Hepaticm. 263 



acknowledged by most recent hepaticologists. Under each genus, 

 the place and the date of its original publication have been given, 

 together with enough of the synonymy to show the claims of the 

 accepted name for recognition. The names of Gray are in all cases 

 given with the feminine termination. 



The arrangement adopted is based on that of Dr. Underwood in 

 the Sixth Edition of Gray's Manual. It combines peculiarities of 

 both Lindberg's and Spruce's arrangements. The tribal names are 

 mostly taken from Lindberg, 



In the preparation of this and the preceding paper, my sincere 

 thanks are due Prof. D. C. Eaton, who has allowed me the use of 

 his library and herbarium, and who has given me much bibliograph- 

 ical and critical assistance. 



ORDER I. JUNG-ERMANNIACE^. 

 TRIBE I. FRULLANIE^. 



1. Frullania Raddi, Jung. Etr. in Mem. Moden. xviii, p. 30(1820): Dum Rev. 



des Genres, p. 12; Hep. Eur. p 26: G. L. & N. S.yn. Hep, p. 408: Spruce, Hep. 



Amaz. et And. in Trans. Bot. Soc. Edin. xv, p. 3. 

 Jubula Dum. Comm. bot. p. 112 (1822), in part. 

 Jubula, sect Ascolobia Dum. Syll. Jung. p. ;>(>. 



Widely distributed ; species about 150. The genus is divided by 

 Spruce (Hep. Amaz. et And.) into six subgenera: — Ghonanthelia, 

 Trachycolea, Homotropantha, Meteoriopsls^ TJii/opsiella and Dias- 

 taloha, 



2. Jubula Dum. Comm. bot. p. 112 (1822), in part. 

 Jubula, sect. Jubulotypus Dum. Syll. Jung. p. 36. 



Jubula Dum. Rev. des Genres, p. 12 (1835); Hep. Eur. p. 26: Spruce, Hep. Amaz. 

 et And. p. 59. U.nderwood in Gray's Manual, Ed. vi, p. 708. 

 Frullaniae sp. G. L. k N. Syn. Hep. p. 426. 



Consists of 2 species, — the variable J. Hutchinsiw Dum. of Europe 

 and America and >T. piligera (Aust.) of the Pacific, which is perhaps 

 a variety of the first. 



3. Lejeunea Lib. in Ann gen. sc. phys. T. 5, p. 372 (1820): Dum. Comm. bot. p. 



Ill; Syll. Jung. p. 32; Rev. des Genres, p. 11 ; Hep. Eur. p. 18: G. L. & N. 

 Syn. Hep. p. 308. 



As now defined by most hepaticologists, the genus includes — 



Marchesinia S. F. Gray, Nat. Arr. Br. PI. i, p. 689 (1821), (Phragmicoma Dum. 

 Comm. bot p. 112; Syll. Jung. p. 35; Rev. des Genres, p. 13; Hep. Eur. p. 30: G. L. 

 & N. Syn. Hep. p. 292); 



Colura Dura. Rev. des. Genres, p. 12; 



Omphalanthus Lindenb. & Nees in Syn. Hep. p. 303 ; 



