80 Dixon: NEW AND RARE AFRICAN MOSSES 
HapitatT: Pretoria, Transvaal, 1914, communicated by Rev. 
Hilderic Friend. 
An interesting addition to the genus, represented in Africa 
hitherto solely by Brotherus’s species cited above, from Kiliman-— 
jaro and Usambara. The sharp denticulation of the leaves in the - 
present plant differentiate it from that, and the weak nerve from 
both that and R. gracile Ren. & Card. 
RHYNCHOSTEGIELLA Hotstit (Broth.) Broth. 
Chaya, Congo Belge, June 16, 1911, R. Kemp 14, communi- : 
cated by W. R. Sherrin. ; 
This agrees with Holst’s Usambara plant at Kew, except that, ; 
growing among other mosses, it is a little more lax and straggling, 
and darker green. 3 
RHYNCHOSTEGIUM VOLKENSII (Broth.) Par. 
Chaya, Congo Belge, June 20, 1911, R. Kemp 19, communi 
cated by W. R. Sherrin. : 
I hestitated at first to identify this with Brotherus’s plant 
from Marangse in the Kilimanjaro region, on account of one of 
two slight discrepancies between it and the original description— _ 
the numerous alar cells, which are not mentioned there, the nerve © 
stout just at base, and then narrowed for the greater part of its : 
length (“superne’”’ according to Brotherus), and the capsule, 
which is described as “fusca, sub ore haud coarctata.” The 
capsules here are blackish when mature, and very slightly con 
tracted below the mouth when dry. 
The British Museum specimen, however (Volkens 447), ag 
exactly in all points with Kemp’s plant; it has a single capsule 
which agrees in all respects with the present specimens, in © 
and form, and is certainly not free from a suspicion of being 
slightly contracted below the mouth. 
NORTHAMPTON, ENGLAND 
