TRICHOSTOMUM. 133 



On rocks, lower down than the preceding. Fr. Summer. 

 Nearly allied to the last, and in some respects resembling a 

 Grimmia, in which genus it is classed by recent authors on 

 Bryology. It is found by the Eev. J. S. Tozer, as far south 

 as Plymouth and Penzance. 



** Fndt-sfalh strairjiit. 

 t Leaves with diajohanoiis points. 



3. Trichostomum LANUGiNosuM, Hedw. [Woolly Fniuje 

 Moss.) Stems elongated, subpinnate; leaves lanceolato- 

 subulate, acuminate, their long diaphanous points serrated ; 

 margins recurved ; capsule ovate ; fruit-stalks short, on la- 

 teral branches; lid rostrate. — Eufj. Fl.]^, 32. Grimmia la- 

 nuginosa. Mull. Sj/n. pt. 1. p. 806. 



Stony ground on the mountains, fruiting more freely in 

 the colder latitudes, and where there is some protection 

 from woods, Pr. Spring. The appearance of this Moss is 

 familiar to all who have trod "Caledonia's hills sublime.'" 

 It is sometimes in such quantity as to exclude all other vege- 

 tation, forming an elastic grey carpet many acres in extent : 

 such we have seen covering the massy shoulders of Ben 

 Wyvis, in Ross-shire. In the calm of a summer day, in 

 such localities. 



