'■206 Traiisactions of the Moyal Society of South Africa. 
coll. E. C. Wroughton, comm. W. E. Sherrin (No. 2) ; Hogsback, 4-6000 ft., 
Tjumie, CP., 1916 ; coll. Hend. (No. 223) ; and again, 1917 ; coll. D. Hend. 
'(Nos. 322, 339). All sterile. 
Paris has made a good deal of confusion in the synonymy of this species 
and P. afro-uncinata. The vars. hreviseta and gracilescens belong to the 
latter species, and " Bartramia afrofontana var. . . . " should read 
JB. afro-uncinata var. ..." in each case. 
In an original specimen at Kew on some stems the leaves are distinctly 
serrate, in others not at all. 
Breutelia afro-scojjaria (C. M.) Par. Gaika's Kop, 6000 ft., Tjumie, 
CP., 1916; coll. Hend. (No. 227) ; Ciant's Castle, 7000 ft., Natal, 1915; 
coll. E. E. Symons, comm. Sim (No. 8668). A fine species, very like the 
European B. arcuata, but differing in essential points. C Mueller describes 
it " e cellulis perminutis pallidis maxime lineari-angustis ubique areolata," 
but this is quite misleading. I have examined an original specimen of 
MacOwan's, and find that there, as well as in the specimens cited above, 
there are numerous rows of subquadrate alar cells reaching some distance 
inwards. 
B. aristaria (C M.) var. plumosa C. M. Near Hogsback, Tjumie, 
4-6000 ft., CP., 1916 ; coll. Hend. (No. 209). 
From the description of B. Spielhausii C M. I should greatly doubt if 
it be distinct from this robust, long-leaved var. of B. aristaria. 
? B. subgnaijhalea (C M.) Par. Town Bush, 3000 ft., Maritzburg, 
1916 ; coll. Sim (No. 8702). A sterile plant, which in absence of fruit 
cannot be determined with certainty, but in all probability belongs here, 
as it agrees vegetatively. B. suhgnajjhalea shows some variation in the 
alar cells, of which there are frequently two or three rows laxer and shorter 
than the median, but frequently these are wanting and there is only a 
single marginal row of narrow cells, almost similar to the rest except for 
being quite pellucid. 
PsiLOPiLUM Brid. 
This distinct genus of Polytrichaceae has not yet been recorded from 
Africa. The species are few and their range restricted ; it is therefore 
remarkable that two species, both new and quite distinct frum one another, 
should have been almost simultaneously collected. The genus is marked by 
the glabrous calyptra (only one species shows a few erect hairs), the laterally 
compressed, usually curved, asymmetrical capsule, the rather undeveloped 
peristome, which is sometimes wanting, and the sinuous lamellae of the 
leaves. These resemble the leaves of Oligotrichum, but have (with one 
known exception) no traces of lamellae on the back of the nerve. 
The species hitherto described number about fifteen, four from the 
