HANDBOOK OF BRITISH HEPATIOE. 123 



by its truly lateral and subpinnate ramification 

 without a single postical branch and by some 

 other of its characters, including even its bluish 

 white colour when dry, is perhaps as nearly allied 

 to Lepidozia reptans and to Anthelia as to Cepha- 

 lozia. I have therefore separated it as a new 

 genus, under the name " Pleuroclada" Spruce on 

 Cephalozia, p. 14. 



Pleuroclada albescens, Hook. 



Stem creeping, branched ; leaves incum- 

 bent, concave, ovate, emarginate, perichaetial 

 leaves everywhere imbricate ; stipules trian- 

 gular ; perianth terminal on lateral branches, 

 ovate. 



Jungermannia albescens, Hook. Br. Jung. 

 No. 72, Supp. t. 4; Gott. and Rab. Exs. No. 

 33, 468 ; Cooke Hep. f. 73. Cephalozia albe- 

 scens, Dumort. Rev. Jung. p. 18 ; Lindb. Journ. 

 Linn. Soc. XIII., 192. Pleuroclada 

 albescens, Spruce Cephalozia p. 14; 

 Carr. and Pears. Hep. No. 262. 



On mountains. 



Growing in large loose patches. Stems 

 ^ to f inch in length, creeping, waved, 

 thread-like, branched twice or thrice di- 

 chotomously, and attached to the ground 

 by tufts of radicles. Leaves rather dis- 

 tant and alternate, very small, nearly hemispherical, 

 half-embracing at the base, at the apex cut with 



