186 
Transactions of the Royal Society of South Africa. 
M. pusillus (Schimp.) C. M., which, according to C. Mueller's diagnosis, 
chiefly differs in the straight, not cygneous seta — " strictiusculo nec campy- 
lopodiaceo"; here it is flexuose when young, erect and straight when old. 
In Wager's plants, too, the leaves are very long and flexuose, while C. Mueller 
describes those of M. nanus as " brevia, firma, parum secunda stricta," and 
those of M. pusillus as " remota, eleganter flexuosa." But this distinction 
is not borne out at all by the specimens, as Eehmann's No. 34 — on which 
M. nanus is founded — has the leaves very flexuose and elongate. The 
present gatherings on the whole are indeed intermediate between C. Mueller's 
description and the actual type ! I have therefore no hesitation in referring 
them to M. nanus, but I am almost equally convinced that M. pusillus is the 
same thing — a point, however, which I am unable to clear up, as there are 
unfortunately no specimens of M. pusillus in Schimper's herbarium at Kew. 
In any case the name M. nanus has the priority, as Campylopus pusillus is 
an unpublished name. 
Bicranodontium chlorotrichum (CM.) Par. Near Hogsback, 4-6000 ft., 
Tjumie, CP., 1916 ; coll. Hend. (No. 196). 
Dicranodontium perfalcatum (C M.) Par. Hogsback, Tjumie, CP., 
1917 ; coll. D. Hend. (No. 349). 
Leucobryaceae. 
Leucohryum madagassum Besch. Kaapsche Hoop, Transvaal, 1915 ; coll. 
H. A. W. (No. 337). 
This species has not been recorded from continental Africa, so far as I 
am aware. It differs from L. Giieinzii C M. notably in the chlorocysts in 
nerve- section being distinctly hypercentric in the upper part of the leaf. 
The foliation is rigid and somewhat regularly seriate, whence the name 
L. selagineUoides applied by C Mueller to the species (' Journ. Bot.,' 1888, 
p. 264). 
FiSSIDENTACEAE. 
Fissidens rufescens Hornsch. Cape Town, 1916 ; coll. H. A. W. (No. 585), 
c. fr. ; Cape of Good Hope, coll. F. Webster, comm. C Webster (No. 986). 
Apart from the reddish colour, which is not always present, this species is 
notable in the form and direction of the leaves, which are not complanate 
and closely vaginant as usual, but have the vaginant lamina open, one wing 
being much larger than the other ; the dorsal lamina is often — especially in 
the lower leaves — very little developed. The hyaline border is frequently 
intramarginal near base. 
F. cuspidatus C. M. George, CP., 1916 ; coll. H. A. W. (No. 548) 
c. fr. This species is heteroicous. The fertile flower may be apical, or 
terminal on a very short basal branch. The ^ flowers are principally 
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