38 HANDBOOK OF BRITISH HEPATIC*. 



half to one-third smaller than leaf, tumid at the 

 keel, nearly flat, margin subrotund, unequally 

 spinulose, exterior surface echinate, cells very 

 minute. Folioles none. Female flowers on short 

 branches, bracts similar to the leaves, but larger, 

 lobule more finely dentate, perianth oval to pyri- 

 form, muricate, obtusely five-angled above. (Plate 

 i, fig. 7-) 



Lejeunia hamatifolia, Hook., Dum. 



Thread-like, loosely branched ; leaves trans- 

 versal, concave, ovate, acuminate, entire, 

 decurved, complicate at the base ; stipules few, 

 small, bifid ; involucral leaves deeply two- 

 lobed, serrate ; perianth pentagonal, with 

 costate wings. 



Jungermannia hamatifolia, Hook. Br. Jung, 

 t. 51 ; Eng. Bot. t. 2592. Lejeunia hamati- 

 folia, Dum. Comm. 1 1 1 ; Gott. and Rab. Exs. 

 215, 476; Carr. and Pears. Exs. 75; Cooke 

 Hep. f. 149. 



On trunks. 



Growing in small crowded green patches. 

 Stems two to three lines to \ inch long, very 

 slender, thread-like, flexuous, procumbent, imbri- 

 cate or creeping, each irregularly once or twice 

 divided in a forked manner. Leaves rather close, 

 seldom imbricate, bifarious, alternate, erect and 



