The Scottish Naturalist. 87 



Altogether, about two hundred species of mosses are known 

 from Glen Tilt, and careful searching would probably result in 

 considerable additions to the number. 



LICHENS. 



Of these I personally know very little, and therefore cannot 

 say much regarding the Glen Tilt species. The Rev. J. M. 

 Crombie has devoted a good deal of attention to the lichens of 

 Blair Athole, and though most of his ''finds" in that district are 

 from localities beyond our bounds, yet there are enough to show 

 that it is not poor in rare and interesting species. The following 

 may be noted : Callclum citrhiiivi, on walls in Glen Fender ; 

 Alectorla nigricans, plentiful on Ben Ghlo ; A. lariata, and its 

 variety parmelloldes , near the summit of Ben Ghlo ; Placodliiin 

 calloplsmtun, var. pllcatum, on a wall near the village ; Lecldea 

 leucophcea, var. conglobata, near the summit of Cairn Gowar ; Z. 

 epanora, Glen Fender ; L. liiclda, Glen Fender ; Z. tu7'gldiila, var. 

 pltyophlla, Glen Fender ; Z. met amor phea, very rare in Glen 

 Fender ; Z. sublatypea, Glen Fender ; Z. llfuosa, near the sum- 

 mit of Cairn Gowar; Z. sllacea, Glen Fender; Z. plana, Glen 

 Fender ; Z, sarcogynlza, near the summit of Cairn Gowar ; Z. 

 siibfwva, Glen Fender; Z. nlgro-glomerata, Z. Gevrensls, and 

 Z. deparcula, near the summit of Cairn Gowar ; Z. liigubrls, Glen 

 Fender ; Z. atrobadla, Cairn Gowar ; Llthographa tesserata, Cairn 

 Gowar, extremely rare. The above are extracted from a paper by 

 Mr Crombie, " On the Rarer Lichens of Blair Athole," in ' Grevil- 

 lea,' vol. i., p. 170. In concluding the paper, Mr Crombie says : 

 " My attention was directed chiefly to those localities in which 

 primary limestone is associated with mica, slate, and quartz — a 

 geological combination which always yields the lichenist every- 

 where throughout the Grampians a rich and rare harvest — e.g., 

 Ben Lawers, Morrone, Craig Guie, &c. Many other interesting 

 species were met wath ; and many which might have been ex- 

 pected to occur, such as Parmelias and Stictas, were but few in 

 number. To those interested in the geographical distribution of 

 our British lichens, I may state that there is a marked contrast 

 in many respects between the lichen flora of the central Gram- 

 pians in Blair Athole, and that of the south-west Grampians in 

 Breadalbane, as also between it and the north Grampians in 

 Braemar." 



Other species discovered since then by Mr Crombie are : 



