BRYUM. 189 



Crevices of rocks and on the ground, iu mountainous 

 countries. Tr. Summer. A neat and distinct species, with 

 curiously curved capsules and shining green foliage. 



9. BiiYUM CAENEUM, Liun. {Soft-leaved Thread Moss.) 

 Stems simple: leaves lanceolate, reticulated, slightly serru- 

 late at the point; nerve disappearing below the summit; 

 capsule obovate, pendulous. 



On sandy and clayey banks that are somewhat moist, ge- 

 nerally associated with other Mosses. Fr. Spring. This is 

 a minute species ; the stems are sometimes innovated, and 

 covered with earth, and the foliage, except the tips of the 

 leaves, which are dingy green ; fruit-stalk and capsule are of 

 a reddish hue. The reticulations of the cellular tissue in 

 the leaf are so large, that they may be distinguished by a 

 pocket-lens of moderate power. 



10. Bryum albicans, Wahl. {Pale-leaved Thread 

 Moss.) Stems branched; leaves ovate, acute, the upper 

 ones lanceolate, subdenticulate, reticulated, the margins 

 plane ; nerve disappearing below the summit ; capsule pyri- 

 form, pendulous. — Eng. Fl. p. 59; Miill. Syn.pt, l.p. 295. 

 B. Wahlenbergi, Schwceg. 



Moist sandy ground, botli in the low country and 

 mountain districts. Tound in Angusshire by Mr. Lyell, 



