New and Interesting South African Mosses. 
221 
suspect, indeed, that the form of the perichaetial bracts is of first importance 
in the determination of some of these plants, and must be held to 
outweigh considerable differences in the leaf form and disposition. A plant 
collected by Prof. Wager at Montagu Pass (No. 575), however, with the 
characteristic perichaetial bracts of B. Gueinzii, has a very different foliation 
from usual, and has, moreover, a distinctly stouter seta than typical B. 
Gueinzii. 
I have therefore not ventured to record the various plants received of this 
group until further light has been thrown upon them. 
B. hyalotis (C. M.) Par. Knysna, CP., 1916 ; coll. H. A. W. (No. 508), 
c. fr. ; Kaapsche Hoop, Transvaal, 6000 ft., 1915 ; coll. H. A. W. (No. 
292), c. fr. 
B. hrachycarpum (Hampe) Jaeg. Grahamstown, CP., 1910; coll. 
J. Hewitt, comm. W. Ingham (No. 7) ; Barberton, Transvaal, 1914-15 ; coll. 
H. A. W. (Nos. 266, 280) ; Kaapsche Hoop on wood and on earth, 1915 ; coll. 
H. A. W. (Nos. 308, 309) ; Knysna, CP., 1916 ; coll. H. A. W. (No. 513) ; 
G-eorge, CP., 1916 ; coll. H. A. W. (Nos. 501, 555). Mostly c. fr. 
B. sphaeropyxis (Rehm.) Par. Ceorge, CP., 1916; coll. H. A. W. 
(No. 534), c. fr. Agrees quite well with Rehmann's plant at Kew. 
C Mueller's description of the seta as " semipollicaris " is not very exact ; 
it is less than 1 cm. in length. 
B. sphaerocarpa (C M.) Jaeg. I have had this frequent and eminently 
variable species sent from various parts of S. Africa, ranging from Cape 
Town to Salisbury in Rhodesia. 
Bkachytheciaceae. 
Pleuropus sericeus (Hornsch.) Broth. Crahamstown, CP., coll. J. Burton, 
comm. G-. Webster (No. 347) ; Pirie Forest, 4000 ft., CP., 1892 ; coll. Sim 
(No. 7154). 
Var. afro-striatus (C M.). Knysna, CP., 1916; coll. H. A. W. 
(Nos. 515, 523), c. fr. ; near Hogsback, 4-6000 ft., Tjumie, CP., 1916 ; coll. 
Hend. (No. 188). 
Brachythecium implicatum (Hornsch.) Jaeg. (syn. B. afro-salehrosum 
CM.; B. afro-velutinum CM.; B. Knysnae CM.; B. BicTcsoni Rehm. M. 
Austr.-Afr. No. 383). Near Lovedale, CP. ; coll. Rev. J. Henderson, comm. 
Rev. D. Lillie (No. 97) ; Knysna Forest, CP., 1914 ; coll. W. C Wordsell 
(No. 8) ; Kaapsche Hoop, Transvaal. 
Brachythecium afro-albicans Dixon, sp. nov. (PI. XTI, fig. 21.) 
Habitu B. alhicantis (L.), sed gracilius, foliis minoribus. Stramineus. 
Caules, ut videtur, erecti, paralleli, hie illic radiculosi, usque ad 8 cm. alti, 
graciles, molles, irregulariter distanter subpinnatim ramosi ; folia suherecta, 
sicca appressa, julacea. Folia caulina leviter plicata vel tantum concava, 
I 
