BEYUM. 191 



pyriform, pendulous. — Eng. Fl. p. 60; Mull. 8yn. pt. 1. 

 p. 314. 



On wall-tops, thatched roofs, and by waysides everywhere. 

 Pr. Spring. This pretty species can hardly have escaped 

 the notice of the most superficial observer of nature's works, 

 its deep silvery-green tufts are so different from any other 

 Moss around. Its compact stems, formed by the closely 

 adpressed leaves, give it so much the appearance of the 

 drooping clusters of the flowers of the Hazel and Poplar, 

 that Dillenius called it the " Catkin-stemmed Silver Moss." 

 It is found in all parts of the world, and in warm climates 

 the leaves are tipped with hairs of such length, as to give 

 them the appearance of tufts of wool, whence the name of 

 the var. lanatum, or " woolly." 



13. Bryum Zierii, Dicks. {Zierian Thread Moss.) 

 Stems branched; leaves closely imbricated, more or less 

 broadly ovate, acuminate, very concave, reticulated, entire ; 

 nerve running nearly to the point; capsule clavate, cer- 

 nuous.— ^;z^. Fl. p. 60; MUll. Sijn.pt. \. p. 288. 



In damp crevices of rocks, on the mountains through- 

 out the United Kingdom. Pr. Summer. The leaves of this 

 species are closely adpressed to the stems, so as to give it 

 somewhat the appearance of B. argenteum; but the reddish 



