NEW AND RARE MOSSES FROM THE WEST OF SCOTLAND 173 



evidently a continuation of the paginal cells, as chlorophyll 

 was detected in them, another central row of larger cells, 

 and in front, irregularly placed smaller cells ; central basal 

 cells of the leaf long, narrow, granular, .O38-.O5 5 by .oo5-.ooS 

 mm. ; outwards broader and shorter, with three to five short 

 perpendicular rows, at basal margin of nearly hyaline, oblong 

 cells, about .032 by .01 mm.; upwards, cells gradually 

 denser, until they are ultimately quite opaque and densely 

 granular, variable in shape and larger than usual .ooS-.oi i 

 mm. diam. ; margin recurved for nearly two-thirds up from 

 base, and what is unusual, more broadly recurved in the 

 middle than below ; pagina unistratose below, soon one 

 marginal transverse couple of cells seen, then two such, 

 and near apex very often three close couples seen. Accord- 

 ingly all the cells except those of the small basal marginal 

 group are more or less densely granular ; besides, in wet 

 weather, minute points, like sterei'ds, are seen everywhere 

 between and even on the cells. 



This moss is evidently allied to G. trichophylla (Grey.), 

 but is quite distinct from it ; besides, the latter, which fruits 

 freely, was not detected in the district. Indeed, this part 

 of the West Coast is rather deficient in species of this genus. 



At Glenfinnan, a railway station half-way between 

 Arisaig and Fort-William, was discovered a peculiar little 

 moss, 



OligotricJium exiguuin. In lax tufts, green above, red 

 below ; stems simple, very slender, slightly undulating, from 

 a quarter to half-an-inch long ; pale, then red ; leaves laxly 

 disposed around stem, incurved when dry, still a little 

 incurved when wet, upper green, lower red, slightly sheath- 

 ing, oblong, apex deeply cucullate with the nerve bent 

 nearly at right angles, rendered sharpish by means of a 

 longish apical cell ; nerve in lowest fourth free of lamellae ; 

 above with from six to eight or nine lamellae, long, slender, 

 composed of from seven to ten bluntly quadrate cells in 

 single series, apical cell a little longer ; lamellae nearly as 

 broad as the breadth of pagina of either side, nerve im- 

 perfectly or interruptedly (two to three) lamellate above ; 

 cells at central base oblong, .02 by .Oil mm., only a few 

 such, the rest, upwards, nearly bluntly square, but variable, 



