NEW HEPATICiE. 265 



rudiments of two or three are frequently visible at the base 

 of the ventral margin. Cellules large ; no fructification de- 

 tected ; hence some doubts exist as to the genus. It is 

 referred to Plagiochila because of the recurved margin at the 

 base of the leaves on the upper side, while that of the infe- 

 rior is subdenticulate. It is allied to P. tridenticulata, Tayl., 

 by its small size and flagelliform shoots, and abundantly dis- 

 tinguished by the shallower division of the shorter, less 

 acuminated leaves, which are more potent and have smaller 

 cellules. 



15. P. ensiformis } Tayl.; surculis elongatis, simplicuisculis, 

 adscendentibus, recurvis ; foliis majoribus, imbricatis, pa- 

 tentibus, dimidiato-cordatis, obtusissimis, subdecurrenti- 

 bus, apice subtridenticulatis, caeterum integerrimis, mar- 

 ginibus ventralibus conniventibus, dorsalibus reflexis. 



Hab. Columbia. Prof. W. Jameson. 



Loosely csespitose. Branches 6-8 inches long, nearly \ 

 inch wide, bending back, brownish-olive. Leaves compla- 

 nate, sometimes in the upper parts of the shoots secund, 

 broadly ovate and gibbous anteriorly, nearly opposite. It is 

 allied to P. Hochstetteri, Lind., and differs by the simple 

 branches, less imbricated and less decurrent leaves, which 

 are of greater size and lighter colour. 



16. P. dependula, Tayl.; surculis elongatis, laxe caespitosis, 

 simplicibus, decurvis ; foliis laxe imbricatis, suboppositis, 

 erectis, adpressis, ellipticis, integerrimis, postice decur- 

 rentibus, marginibus subflexuosis, subincurvis. 



Hab. East side of the Cordilleras, Peru. Prof. W. Jame- 

 son. 



Shoots tawney olive, the tops recurved or hanging down j 

 nearly simple. Leaves in two opposite series, pressed together 

 into the same plane, and nearly concealing the stem, wider than 

 long, very obtusely angular at the top but quite entire. 

 Perigonia are narrow oblong spikes in the course of the 

 shoots. It is judged to be a Plagiochila from its close resem- 

 blance to P. ansata, Hook. fil. et Tayl. from Falkland Island. 



