186 HISTOHY OP BRITISH MOSSES. 



SO plentiful. Several varieties are enumerated by Conti- 

 nental authors. 



B. Ca2wdes smooth. 



a. Teeth of the outer peristome shorter than the inner. 



(j\Ieesia, Hedw.) 



3. BuYUM TRiCHODES, Liuu. {Capillars/ Thread Moss.) 

 Stems somewhat branched ; leaves linear^ obtuse, entire, re- 

 ticulated; capsule narrow-pyriform, curved, subcernuous; 



(.^ seta very strong. — Eng. M.p. 57. Meesia uliginosa, Miill, 

 Syn. p>t. \. p. 465. 



Wet places on the Scottish mountains. On basaltic rocks, 

 Winch Bridge, Teesdale. Fr. August. A neat species, of 

 a deep yellow-green colour. 



4. Bryum triquetrum. Turn. {Long-stalked Thread 

 Moss.) Stems elongated, branched ; leaves lanceolate, ca- 

 rinate, acute, serrated, reticulated ; capsule pjnriform, erecto- 

 cernuous; seta exceedingly long. — Eng. Fl. p. 58. Meesia 

 longiseta, Mi'dl. 8yn. pd. 1.^;. 465. 



Pound by Dr. Scott "on the borders of a lake in the 

 north of Ireland." 



5. Bryum dealbatum, Dicks. [Tale-leaved Thread 

 Moss.) Stems short; leaves lanceolate, acute, plane, reti- 



L"^ culated, serrated at the points; capsule pyriform, nearly 



