242 ANNALS OF SCOTTISH NATURAL HISTORY 



doubts whether M. limosa, described in the " Annals " for 

 April 1905, should be retained as a species and not placed 

 as a variety under it. However as the peculiar rosette-like 

 manner of growth in M. limosa (not present in this), and as 

 the small size appears constant in the various places where 

 it has been found, I meanwhile retain it as such. 



As tending to encourage a more critical examination of 

 the areolation, I shall describe another moss which has 

 evident affinities to Leptotrichum flexicaule, yet differs from 

 it in several obvious particulars as well as in the areolation. 



Leptototrichum cyclopJiyllum, n.sp. In rather lax tufts 

 from two to three inches in height, deep green above with a 

 rather narrow pale or pale yellow band immediately under- 

 neath, thereafter fuscescent to the base, only slightly red- 

 radiculose in the lower part ; stems slender, simple or 

 sparingly dichotomously divided, of a deep red colour, 

 closely flexuose or rather zigzagging, where the divisions 

 are only about half the length of those of L. flexicaule and 

 more pronounced ; leaves secund and for the greater part 

 arcuato-incurved in the same direction throughout, expanded 

 at the base in a triangular rather than in a semi-elliptical 

 form, narrowing upwards rather suddenly, longly subulate, 

 margin plane, entire at and near base but deeply and 

 sharply as well as closely serrated at apex, more distantly 

 but as deeply serrated on margin in the upper third, thence 

 serratures become gradually shallower downwards, upper 

 serratures have a perpendicular height from .OO9-.OI3 mm. ; 

 nerve near base, broad, flat, .075-.! mm., tapering and 

 becoming predominant, although a single row of narrowing 

 paginal cells on each side seen far up, .02 5 -.034 by .003 

 mm., cells at central base large, oblong with bright trans- 

 parent nuclei, .O45-.O7 by .OO7-.OI mm., outwards, cells 

 narrower to margin ; upper cells are nearly as long but 

 much narrower, viz. .O4-.o6 by .OO3-.OO5 mm. 



On the ground beneath birch trees, behind Onich, 1908. 



Four or five capsules of the previous year were secured 

 but became lost in the vasculum. 



The wide differences in the areolation of these two 

 mosses are sufficient to keep them apart while the red colour 



