154 MR. W. MITTEN ON THE MUSCI AND HEPATIC 
longe lanceolatis sensim tenuissime acutis plicatis, marginibus ser- 
rulatis, nervo tenui excurrente, cellulis ubique elongatis angustis pa- 
pillatis, basi ad angulos paucissimis, circiter tribus majoribus fuscis, 
perichztialibus minoribus e basi ovata lanceolatis levioribus, theca in 
peduneulo semiunciali horizontali subglobosa plicata gymnostoma, 
operculo brevi conico.: 
Hab. Cameroons Mountain, alt. 5000-9000 feet, on rocks, Mann. 
Differs from B. gnaphalea in its leaves having the upper portion suddenly 
divaricate, the cells in the erect base all narrow and elongate ; in B. gna- 
phalea the cells occupying a considerable space on each side of the erect 
base are shorter and wider than in other portions of the leaf. 
This is the first occurrence of a gymnostomous species in this group of 
Bartramiacez. 
BRYACEA, Mitten. 
Miericunorerta, Hornsch. 
M. ova.is, sp. nov. Dioica, cespitosa, caule brevi radiculoso, foliis 
imbricatis erecto-patentibus ovatis acuminatis integerrimis, rarius 
apice denticulo uno alterove instructis, nervo percurrente, cellulis laxis 
teneris, perichztialibus ovato-lanceolatis, theca in pedunculo gracili 
pallido globoso-pyriformi, operculo conico, peristomio dentibus su- 
bulatis pallidis, annulo composito. 
Hab. Cameroons Mountain, alt. 10,000 feet, Mann. 
Stems scarcely half an inch high, in compact tufts of a pale shining 
yellow. In the form of its capsule allied to M. Jamesoni, Taylor, but it 
is a larger moss. 
M. BASILARIS, B. et S. 
Hab. Cameroons Mountain, alt. 7000-8000 feet, Mann. 
Bryvum, Dill. 
(Bryum.) 
B. JULACEUM, Sm. id 
Hab. Cameroons Mountain, alt. 7000 feet, Mann. 
A few fragments with an Anthoceros. 
B. ARGENTEUM, L. 
Hab. Cameroons Mountain, alt. 8000 feet, Mann. 
B. ALPINUM, L. > 
Hab. Cameroons Mountain, alt. 12,000 feet, Mann. 
B. PALLESCENS, Schwegr. 
Hab. Cameroons Mountain, alt. 7000-12,000 feet, Mann. 
Specimens fine, and agreeing exactly with European and'American states. 
(Brachymenium.) 
B. FLEXIFOLIUM, B. et S. 
Hab. Cameroons Mountain, alt. 8000 feet, Mann. 
