82 HISTORY OF BRITISH MOSSES. 



almost the only distinguishing mark between this Moss and 

 Zygodon conoideus, in whose company it is sometimes found, 

 and with which genus recent WTiters associate it. It is 

 found, but not abundantly, in France and Germany. 



4. Gymnostomum cuiiviROSTiixjM, Hedw. {Curved-leaJced 

 Beardless Moss,) Leaves lanceolate-subulate, erect, rigid, 

 straight when dry ; capsule (brow n) broadly ovate, lid ob- 

 liquely rostrate, longer than the capsule. — Engl. Fl. jp. 7. 

 Weissia curvirostris, Milll. Syn. j)t. \. p. 658. 



Moist rocks, especially such as are calcareous, in seve- 

 ral situations in Britain and Ireland. Pr. Summer. It is 

 a variable Moss, and has by its synonyms caused a good 

 deal of discussion. Miiller records three of these varieties. 



5. Gymnostomum rupestre, Schwsegr. {Tufted Rock 

 Beardless Moss.) Leaves linear-subulate, patent, flaccid, 

 flexuose, twisted when dry ; capsule (pale) ovate ; lid conico- 

 rostrate, shorter than the capsule. — E)igl. Fl. ^i. 8. Weissia 

 rupestris, Milll . Syn. 2^t. l.^j. G57. 



Moist dripping rocks ; more abundant in subalpine dis- 

 tricts. Fr. Summer and Autumn. This also varies some- 

 \\hat in its character, and three of these varieties are de- 

 scribed by Miiller. The leaves are of a softer consistence 

 than G. curvirostrum, wliich it much resembles. 



