l6o HANDBOOK OF BRITISH HEPATIC^E. 



Involucral bracts two, twice the size of ordinary 

 leaves, ovate-oblong, emarginate. Perianth obovate, 

 compressed, mouth broad, bilabiate, curved to one 

 side. Calyptra campanulate. Capsule dark brown, 

 spores reddish-brown, granular, i^p. diam. Andrae- 

 cium terminal. Perigonial leaves closely imbricate, 

 bilobate. Antheridia usually solitary. (Plate 3, 

 fig> 47-) 



Plagfiochila spinulosa, Dicks .^ Dum. 



Stem erect, rather branched, leaves semi- 

 vertical, obovate, recurved, dentately-spinu- 

 lose ; perianth lateral and axillary, rounded- 

 oblong, truncate, mouth spinulose. 



Lichenastrum pinnulis alternis, Dill. Muse. p. 

 489, t. 79, f. 14. Jungermannia spinulosa, Dicks. 

 Crypt. II., p. 14; Hook. Br. Jung. t. 14; Eng. 

 Bot. t. 2228. Plagiochila spinulosa, Dum. Hep. 

 Eur. p. 45 ; Gott. and Rab. Exs. 500 ; Cooke 

 Hep. f. 32 ; Carr. and Pears. Exs. No. 89 ; 

 Carr. Br. Hep. p. 60, t. iv., f. 14. 



var. 8 microphylla. Stems filiform, densely 

 pulvinate, all the leaves minute. Carr. and 

 Pears. Exs. No. 90. 



var. procumbens, Carr. and Pears. Exs. 

 No. 223. 



var. punctata. Carr. 1. c. Smaller, densely 

 caespitose, repeatedlyramose, ultimate branches 

 flagelliform ; leaves punctate, loosely im- 



