204 
Transactions of the Royal Society of South Africa. 
Inter folia comalia saepe 2}ropagula numerosa longa, erassa, rhabdiformia 
articulata inveniuntur. Cetera ignota. 
Hab.—ILogsh^ck, 4000 ft. alt., Tjumie, CP., 1917; coll. D. Henderson 
(Nos. 326, 327, 337). 
A pretty little species forming neat, dense, minute rosettes after the 
manner of Uhodohryum roseum, but far smaller. It is quite distinct from 
any of the species of the group known to me, and for that reason I have 
not thought it needful to include it in the above key. 
Rhodohryum umhraculmn (Burch), Par. Near Lovedale, CP., 1913 ; 
coll. Eev, Jas. Henderson (No. 92) ; Hogsback, Tjumie, CP., 1917 ; coll. 
D. Hend. (No. 329) ; Pirie Forest, 4000 ft., CP., 1892 ; coll. Sim (No. 7226, 
c. fr.) ; Maritzburg, 1909 ; coll. H. A. W. (No. 4), c. fr. 
Rhodohryum roseum (Weis) Limpr. (syn. Bryum leucofhrix C M.). Near 
Hogsback, alt. 4-6000 ft., Tjumie, CP., 1916 ; coll. Hend. (No. 201c) ; 
Dohne Hill, 5000 ft., CP., 1898 ; coll. Sim (No. 7215) ; Poleta, 4000 ft., 
Natal, 1914 ; coll. I. W. Haygarth, comm. Sim (No. 1), c. fr. 
I had determined the S. African plant as R. leucothrix (C M.) Broth, 
so long as I had seen only the sterile plants, since it was possible that the 
fruit might reveal some differences from R. roseum; the Poleta gathering, 
however, shows that the fruit is exactly identical with that widely- spread 
species. Mitten refers Central African plants to the same species, and some 
Tropical African plants which T have seen certainly belong here, though it 
must not be assumed, I think, that all the allied plants in that region belong 
to a single species. 
Mniaceae. 
Mnium rostratum Schrad., var. nov. Reidii Dixon. 
Caules steriles longissimi, usque ad 2 pedes et ultra, pendentes, hie illic 
ramosi, pulchre frondiformes. 
Hah. — Town Bush, Maritzburg, on face of wet rock with Cystopteris 
fragiJis and Strepto carpus, coll. A. Eeid ; and also later by Sim (No. 
"7552). 
In spite of the remarkable development of this plant, which was sent me 
by Mr. Sim under the name of M. Reidii sp. nov., it must, I think, be 
considered a variety of M. rostratum — a species which is not infrequent in 
S. Africa. 
Ehizogoniaceae. 
Rhizogonium vaUis-gratiae (Hampe) Par. Blinkwater Pavine, 3000 ft., 
1917, coll. Prof. Bews, comm. Sim (No. 8586). A strikingly different plant 
from most of its congeners. 
