BARTRAMIA. 85 



is of a greenish colour, varied with brown, and almost a 

 deep red brown when quite ripe; lid obtusely conical; ca- 

 lyptra of the same shape, but more acuminated. 



30. BARTRAMIA. 



GEN. CHAR. Fmitstalks terminal ; Capsule subglobose ; 

 Peristome double ; the exterior of 1 6 teeth ; the 

 inner of a membrane divided into 16 bifid seg- 

 ments ; Calyptra dimidiate. (TAB. III.) 



Between the division of the segments of the inner peristome 

 short filiform processes may be observed in all the species except 

 in B. arcuata. This genus approaches very nearly to Bryum, 

 but has in almost every species a spherical capsule 5 and the 16 

 broad segments of the inner peristome, instead of being entire, 

 or only perforated, are cleft like the teeth of a Dicranum. 



* Fruitslalks long, stralgkt (not curved). 



B. pomiformii ; leaves patent, subulate, strongly serrated, 

 the nerve reaching to the summit, twisted when dry. 

 (TAB. XXIII.) 



K. minor:, stems shorter, leaves flexuose. 



B. pomiformis, Hedw. Sp. Muse. p. 164. Engl.Bot. t. 998. Turn. 

 Muse. Hlb. p. 108. Hook, in Fl. Lond. ed. 2. (with a figure.) Schwaegr. 

 Suppl. t. 68. B. crispa. Swartz. Bryum pomiforme. Linn. B. vul- 

 garis. Moug. et Nestl. n. 137- Dill Muse. t. 44. f. 1. 



/3. major; stems much lengthened out, branched ; leaves longer, 

 crisped, 'especially when dry. Hook, in Fl. Lond. cd.2. (with a figure.) 

 B. crispa. Brid. Muse. v. 2. p. 3. t.l.f. 4. Turn, in Ann. of Bot. v. 1. 

 p. 527. Engl. Bot. t. 1526. Schwaegr. SuppL t. 59. B. pomifonnis /3. 

 elongata. Turn, in Ann. of Bot. v. 1. p. 1526. 



HAB. Heaths and dry banks. /3. principally in subalpine 

 countries. 



Of this species the stems are extremely variable, from 

 half an inch to three or four inches in length. In the largest 

 state it becomes the B. crispa of many authors ; but we 

 must confess that, except in this particular and the longer 

 and more crisped leaves, we perceive no difference between 

 and the more usual appearance of the plant : hence we 





