112 ANNALS OF SCOTTISH NATURAL HISTORY 



are not wiry as in the other. The sinuous areolation 

 occupies only the lowest fourth of the leaf, the rest of the 

 cells being roundly quadrate, small, measuring from 6 to 

 9 across ; the apex of the leaf is very shortly hair-tipped, 

 while there is a fair proportion of leaves which are muticous. 

 and bluntish. This moss may meanwhile be named Grinnnia 

 calvescens. 



There is a second moss under the same division of the 

 Grimmije which has much greater pretensions to specific 

 distinction. 



Grimmia fuscoviridis. In extensive compactish tufts 

 several inches in diameter and from I to 3 inches in height. 

 Shortly deep green above, darkly fuscous to nearly black 

 below ; stems long, simple or sparsely divided, flexile, 

 readily delapsing ; leaves rather densely disposed even to 

 the base, when dry nearly erect and appressed, slightly 

 spreading but straight when moistened, rather broadly and 

 shortly lanceolate, somewhat acuminate, muticous and blunt- 

 ish at the apex, quite entire, scarcely carinate, margins 

 narrowly recurved in lower half, but almost entirely so on 

 one side only, plane above ; nerve broad, about one-fourth 

 to one-third the breadth of the leaf near the base, only 

 bulging a little behind, composed of 3 strata of cells below, 

 generally of 4 strata in the upper third, the anterior row 

 having the largest cells, often pellucid, and then about 9 

 broad, pale, then quickly turning a deep fuscous red through- 

 out (as well as the pagina), not reaching the apex, which is 

 concave as well as the leaf itself for a short distance down- 

 wards ; cells of the pagina smooth, bistratose throughout, 

 except in the lower third of leaf or thereby, where they are 

 unistratose, although the margin remains bistratose and 

 thickened, nearly roundly quadrate above and small, strongly 

 and narrowly sinuose in lower third, a few, in single file, on 

 the basal margin, nearly smooth and rectangular. The 

 nerve becomes thicker in an upward direction as well as the 

 pagina, the latter, near the apex, often 2 5 thick, while below, 

 where the cells are unistratose, only 14. 



This moss is peculiar in several respects ; in the strong 

 tendency to assume the fuscous-red colour a colour exactly 

 resembling that of the Andrccea only a small section at 



