18 G Y M N O S T O M I. [ Gymnostomum. 



hardly admit the hand to remove it, and generally bearing 

 abundance of fructification. Mr. Drummond finds it in Clova ; 

 Mr. Trevelyan upon Craig-calleach, and, generally speaking, it 

 is in more abundance on the schistose rocks, (probably on ac- 

 count of their greater moisture, and more abundant soil,) than 

 on any others. 



2. G. cestivum; leaves lanceolate twisted when dry, those of the 



perichaetium broadly ovate convolute, capsule oblong smooth. 

 (TAB. VI.) 



Gymnostomum sestivum. Hedw. Sp. Muse. t. 2. f. 4 7. Schwaegr. 

 Suppl. v. 1. p. 30. Brid. Meth. p. 18. Hook. Fl. Scot. P. II. p. 

 122. Hobson, Brit. Mosses, v. 2. n. 6. Nees et Hornsch. Bryol. Germ, 

 v. 1. p. 174. t. 11. / 25. Am. Disp. Muse. p. 9. Drummond, Muse. 

 Scot. v. 2. n. 5. 



G. luteolum. Engl. Bot. t. 220. (not of Fl. Brit, according to Mr. 

 Davies 1 specimens.} 



G. tristichon. Wahl. Lapp. p. 303. 



Aiiictangium compactum. Schwaegr. Suppl. v. 1. p. 36. t. 11. 

 Brid. Meth. p. 23. Funck, Deutschl. Moose, t. 5. n. 5. 



HAB. On wet rocks, especially near water-falls. 

 The stems are from one to three or four inches in length, and 

 very densely tufted and matted together ; the leaves short and 

 somewhat rigid, dotted, pale in the nerve ; but not, as it ap- 

 pears to us, constantly trifarious in their insertion, as stated by 

 Wahlenberg and others. 



3. G. viridissimum ; leaves broadly lanceolate, capsule ovate, lid 



oblique rostrate. (TAB. VI.) 



Gymnostomum viridissimum. Smith, Engl. Bet. t. 1583. Hook. Fl. 

 Scot. P. II. p. 122. Am. Disp. Muse. p. 9. 



Dicranum viridissimum. Smith, Fl. Brit. p. 1224. Turn. Muse. 

 Hib. p. 71. 



Grimmia? Forsteri. Smith, Fl. Brit. p. 1196. Engl Bot. t. 2225. 

 Bryum Forsteri. Dicks. Crypt. Fasc. 3. p. 4. t. 7. f. 8. 

 Weissia Forsteri. Brid. Meth. p. 45. 



HAB. frees, principally in the south of England ; rare in 

 Scotland ; where, I believe, it has never been found in 

 fruit. Mr. D. Don has found it upon rocks in Inch 

 Keith ; Capt. Carmichael in the same situation in Ap- 

 piii, and Mr. Drummond in the Den of Airly, and Den 

 of Rechip. 



8 



