236 



HANDBOOK OF BRITISH HEPATIC^. 



786 ; Eng. Bot. t. 2229, Ed. 2, 1820. Hook. 

 Jung. t. iii. ; Brit. Flor. V., i., p. no. 

 Gymnomitriiim concinnatum, Corda Sturm., 

 Fl. XIX., XX., p. 23, t 4 ; Nees Leber. I., 

 115 ; Carr. Brit. Hep. p. 5, t. 1, f. 2 ; Got. 

 and Rab. Exs. No. 423 ; Carr. and Pears. 

 Exs. No. 151, 152 ; Cooke Hep. No. 4, 

 f. 19, 20. 



Barren spongy places in Scotch mountains. 



In sub-alpine northern districts of England. 

 (Fruit, Summer.) 



Growing in thick matted tufts of consider- 

 able size, of a silvery hue. Stems creeping, as- 

 cending, rooting from be- 

 neath, ^ inch long, simple, 

 or with a few erect branches 

 (fig. 160). Flagellar creep- 

 ing, thread-like, interwoven, 

 brownish, naked or scaly, 

 at length ascending and 

 proliferous. Leaves erect, bi- 

 farious closely imbricated, 

 ovate, concave (fig. 161), 

 acutely emarginate, or 

 notched ; margin entire ; 

 but firm, pale glaucous, silvery- 

 white when old. Fertile shoots 

 clavate. Involucral leaves, three to four pairs, 

 larger than the ordinary ones, upper pair con- 

 nivent, with two or three teeth at the apex. Inner 

 involucre of two or three smaller leaves. Calyptra 

 campanulate, six to eight barren pistillidia scattered 



160. 



texture thin 

 olive, nearly 



