io8 ANNALS OF SCOTTISH NATURAL HISTORY 



So far as I can recall, this is the first instance where two distinct 

 sets of bodies, both presumably of the nature of paraphyses, have 

 been seen in conjunction ; accordingly I have been induced to 

 publish this description, in the hope that some botanist may be able 

 to throw light on the subject, for hitherto I have no clue to an 

 explanation. The inflorescence is dioicous. 



As the areolation of this moss is laxer than in genuine specimens 

 of D. ciervata, while the margins of the leaves are sharply serrated 

 in the upper third, as well as having frequently hyaline teeth on the 

 back of the nerve in the same region, I think it right, meanwhile at 

 least, to separate the two, and to name the moss under discussion 

 Dicranidia fuscorufa. 



In previous papers I have indicated the tendency of several 

 species of the genus Campylopus, and notably of C. ptirpurasceiis, 

 to have cucullate apices, as well as bulbous bases to the leaves. 

 The first moss which acted as an incentive to the further investiga- 

 tion of this tendency was a Campy/opus from the shores of Lake 

 Nyami, in Central Africa, sent by the late Professor G. Dickie, of 

 Aberdeen. This moss is allied to C. atrovirens. It has all the 

 barren stems with leaves without hair-points, and their apices deeply 

 cucullate, while the fertile stems, having at their apices crowded 

 fastigiate tufts of branches, have all the leaves with long rough hair- 

 points, and show besides aggregated setae. Meanwhile I may be 

 permitted to name, provisionally, this moss C. Dickieanus. 



The following is also related to C. atrovirens, through the variety 

 incuruatiis, but is quite distinct from both. 



CAMPYLOPUS PRASINORUFUS. Tufts dense, from i to 2 inches 

 in height, green above, with almost always a pale or yellowish narrow 

 stratum beneath, and the rest below fuscous or fusco-rufous ; stems 

 simple or bifurcate ; leaves closely arranged, appressed when dry, 

 slightly spreading but straight when wet, lanceolate, slightly acumi- 

 nate, apices bluntish, cucullate, bases bulging and radiculose ; central 

 basal cells in a few short perpendicular rows, pellucid or nearly so, 

 oblong, small (0.024 to 0.035 by o.oi to 0.014 mm.), outwards 

 smaller and narrower to margin, where they are very narrow, short, 

 distinct, and separate (0.015 to 0.022 by 0.004 to -5 mm.), 

 upwards, next nerve, irregularly rhomboid or quadrate (0.016 to 

 0.024 by 0.006 to 0.008 mm.), while the marginal cells continue 

 narrow, and near the apex very small and narrow (0.012 to 0.016 

 by 0.003 to -4 mm.), the latter continuing to the apex in five 

 to eight or more perpendicular rows on each side of the narrowing 

 nerve, which vanishes at or below the apex ; nerve near base about 

 one-third the breadth of leaf, tapering, thin (about 0.045 mm - 

 thick), showing, in thin cross section, two anterior rows of cells of 

 nearly the same size (from 0.005 to - OI 3 mm - diam.), a third row 

 behind these, of cells scarcely perceptible above but showing near 



