NEW AND RARE MOSSES FROM THE WEST OF SCOTLAND 245 



at margin as those above, upper cells bluntly quadrate, dark, 

 opaque, with 2 to 4 pellucid nuclei, narrowly separate, 

 .007-. I mm. across, a little smaller near apex. On schistose 

 rocks. This moss has been found in several localities at 

 considerable distances from one another, but all within what 

 may be reckoned the same large basin, viz. Morar, Kentallen, 

 Onich, Ardgour (M. C. Stirton), all on the shores of Loch 

 Linnhe, an arm of the sea. 



There is a remarkable variety of this moss in which the 

 whole plant, except the year's growth of about one-eighth 

 of an inch at the summit, is covered entirely (stems and 

 leaves) with masses of a fine reddish - purple tomentum. 

 This may be called var. obrutum. 



This moss differs from An. compactum in the short stems, 

 longer, narrower leaves with the nerve longly excurrent, etc. 



Dichodontium flavescens (Dicks.) has puzzled me for 

 many years. This moss has, by nearly all bryologists, been 

 regarded merely as a form of D. pellucidum. Hitherto I 

 have been content to wait, inasmuch as I could not see any 

 decided departure towards characters that were likely to 

 give it sufficient distinction as well as permancy of type. 



Last year near Onich I picked up what was at first 

 sight reckoned an enlarged form of this moss, but when I 

 saw that the leaves were much longer, more slender and 

 more slenderly and sharply acuminated, that there was 

 entire absence of papillae, much larger areolation, and where, 

 moreover, the nerve passed into the acute apex, and even in 

 the larger proportion of cases was extended a little beyond 

 it, I felt constrained to take a different view of this moss 

 and to raise it to the rank of a species. 



DicJwdontium fulvescens, n.sp. — Usually in extended 

 rather large straggling tufts, dark green, mixed with rusty 

 brown above, darker below ; stems slender, 2 to 3 inches 

 long, simple or dichotomously, less frequently fastigiately 

 branched above ; leaves rather laxly disposed around the 

 stem, slightly curled and twisted as well as spreading 

 irregularly when dry, spreading much and even becoming 

 arcuato-reflexed when moist, from an upright, broader 

 slightly clasping base, lanceolate, acute at apex or slightly 

 acuminated, margin plane, sharply and deeply serrated down 



