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, 14^. diam. Andrae- 

 cium terminal. Perigonial leaves closely imbricate, 

 bilobate. Antheridia usually solitary. — (Plate j, 



fig- 4-7-) 



Plagiochila 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. \\.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. e procumbens, Carr. and Pears. Exs. 



No. 223. 



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

 caespitose, repeatedlyramose, ultimatebranches 

 flagelliform ; leaves punctate, loosely im- 



