234 The Scottish Naturalist. 



There is another Campylopus found on Benbecula which has 

 puzzled me considerably ; viewed casually, it might well be taken 

 for a state of C. Schwarzii. The stems are densely tufted, so 

 densely, indeed, as to give the impression of C. compactus, without, 

 however, the slightest trace of the red tomentum of the latter. 

 Indeed, tomentum is singularly absent, only a few colourless 

 radicles are seen here and there on the lower leaves. The stems 

 are from one to two inches in length. The leaves have no 

 auricles, and are narrowed at base. The basal areolation is nar- 

 rowly cylindrical near the margin, more broadly so close to the 

 nerve. The nerve near base occupies two-thirds, or even three- 

 fourths, the breadth of leaf, and is predominant for the upper 

 three-fourths. The leaves in their upper parts are not convolute, 

 as in C. compactus, but are flattish, and the apex is entire on edge 

 and back, and is not hair pointed. 



I propose, meanwhile at least, to give to this moss the name 

 Campylopus symplectus. 



Both mosses have been found only in a barren state. 



I possess GrimmicB from various parts of Scotland, whose leaves 

 become strongly and quickly recurved on being moistened. One 

 group is from the Lowlands, and all its members may be included 

 under G. subsquarrosa. As the specimens from Moncreiffe Hill 

 and Dumbuck, near Bowling, form the original types of G. sub- 

 squarrosa, they are now taken as tests in the discrimination of 

 what I am inclined to view as a second species of this group. In 

 this latter the leaves are much more strongly reflexed on the 

 application of moisture, to a degree, indeed, that may be termed 

 circinato-reflexed, and they remain so much longer. In a dry 

 state the leaves are erecto-patent, and not appressed. The tufts, 

 in colour and consistency, have much the appearance of those of 

 G. Hartmanni, and, viewed casually in a dry state, are very apt to 

 be mistaken for them. 



The leaves of this moss are much narrower, and the apices 

 are quite sharply pointed, while the margin is strongly reflexed 

 in the lower half, those of G. subsquarrosa being nearly plain in 

 the same situation. The areolation of the latter at base is pellucid 

 and rectangular for a considerable space, but that of the moss 

 under consideration is bluntly quadrangular, and is often greenish, 

 although not sinuous as in G. Hartmanni. The upper areola- 

 tion is minute, dense, and opaque in all. That of G. Hartmanni, 



