SOME SCOTTISH MOSSES in 



wards from 8 to 5 /A, ultimately merging into the posterior 

 elevated and depressed series of cells, of large groups of 

 sterei'd cells behind and between the middle row, but of much 

 smaller groups in front of the same row ; scarcely any alar 

 groups of cells present, but when seen, composed of small 

 groups of hexagonal hyaline cells with thin walls ; central 

 basal cells oblong, pellucid, 20 to 28 by 10 to 12 /JL, in 

 2 to 5 rows, shorter outwards, bluntly rhomboid, and near 

 margin of 4 to 8 rows of narrow cells, but not so narrow as 

 usual, viz. 4 to 5 yu- broad, upwards more narrowly rhomboid 

 or even triangular, 20 to 27 by 6 to 8 /u,, in upper third 

 of leaf and extending to apex, cells oval, 8 to 1 3 by 6 

 to 8 /*. 



This moss shows a section of the nerve as having a 

 general resemblance to that of C. brevipilus, but the posterior 

 bulging cells are well developed. In much the greater pro- 

 portion of the specimens, the back of the leaf in the upper 

 third shows pellucid tubercles. 



In September of last year, I picked up near Killin 

 another Campylopus rather densely tufted, having stems about 

 an inch in length, of a dark green above with a peculiar 

 glossy sheen (rather unusual), dingy brown or blackish below, 

 and sparsely interspersed with slender reddish radicles. The 

 leaves are slenderly acuminated and slightly falcate above, 

 toothed pretty far down the margin, and with pellucid teeth 

 on the back of the nerve in the same region, much as C. 

 SJiawii. As, however, the constitution of the nerve is very 

 nearly that of C. flexuosns (although it is a little broader) as 

 well as the general areolation, this moss can only be reckoned 

 as a divergence from the latter towards C. Shawii. As I 

 am anxious to record such transitions, I shall meanwhile 

 name this C. flexuosus, var. subnitidus. 



In August last Leptotricliuin flexicaule was got in fruit 

 in two places near Killin, in one by Mr. D. Haggart, in the 

 other by myself. So far as I am aware, this is the first 

 record of this comparatively common moss in a fertile con- 

 dition in Great Britain. 



As is well known, the areolation of this moss is very 

 dense. The cells near the central base, which are very 

 generally the largest in any moss, vary only from 1 5 to 



