106 APLOPERISTOMI. [ Trichostomum. 



21. Hook. Fl. Scot. P. II. p. 134. Hobson, Brit. Mosses, v. 1. n. 44. 

 Drummond, Muse. Scot. v. 2. n. 44. Funck, Deutschl. Moose, t. 17. n. 

 8. Am. Disp. Muse. p. 22. 



Racomitrion lariuginosum. Brid. Meth. p. 79. 

 Bryum hypnoides. a. Linn. Sp. PI. Dili. Muse. t. 47. / 32. 

 HAB. On mountains, especially at some considerable eleva- 

 tion. It has likewise been found on the flat heaths in 

 Norfolk by the Rev. James Layton. 



This species, very common in mountainous countries, can 

 scarcely be mistaken for any of its congeners. The stems are 

 sometimes a foot or more in length, and have an irregularly 

 pinnated appearance ; and the fruitstalks, without an attentive 

 observation of the branches on which they stand may be taken 

 for lateral. 



3. T. canescens ; stems elongated irregularly branched, leaves 

 ovato-lanceolate their diaphanous acuminated points slightly 

 serrated, capsule ovate, teeth of the peristome very long and 

 filiform, lid subulate. (TAB. XIX.) 



Trichostomum canescens. Hedw. St. Cr. v. 3. t. 5. Turn. Muse. 

 Hib. p. 39. Smith, Fl. Brit. p. 1242. Engl. Bot. t. 2434. Moug. et 

 Nestl. n. 20. Hook. Fl. Scot. P. II. p. 134. Schwaegr. Suppl. v. 1. 

 p. 147. Funck, Deutschl. Moose, t. 17. n. 10. Hobson, Brit. Mosses, v. 

 2. n. 38. Drummond, Muse. Scot. v. 1. n. 44. Am. Disp. Muse. p. 22. 



Racomitrion canescens. Brid. Meth. p. 78 DHL Muse. t. 47. / 



27. B. and/. 31. 



Trichostomum ericoides. Schrad. Turn. Muse. Hib. p. 38. Smith, 

 Fl. Brit. p. 1241. Engl. Bot. t. 1991. Schwaegr. Suppl. v. 1. p. 147. 

 /. 38. Moug. et Nestl. t. 409. Funck, Deutschl Moose, t. 17. n. 9. 

 Racomitrion ericoides. Brid. Meth. p. 78. 

 Racomitrion canadense. Brid. Meth. p. 80. 

 Bryum ericoides. Dicks. Crypt. Fasc. 4. p. 14. 

 HAB. On heaths and in mountainous countries; also on 



the sandy beach near Yarmouth. 



The T. ericoides of authors has somewhat of a pinnated ap- 

 pearance, arising from its numerous very short branches ; but 

 in the form of its leaves, capsule, and peristome, it perfectly ac- 

 cords with T. canescens. 



4. T. heterostichum ; stems elongated branched, leaves ovato-lan- 

 ceolate their diaphanous acuminated points slightly serrated, 

 capsule cylindrical, teeth of the peristome rather short, lid 

 rostrate. (TAB. XIX.) 



