152 MR. W. MITTEN ON THE MUSCI AND HEPATIC 
GRIMMIACEA, Mitten. 
GRIMMIA, Ehrh. 
G. ABYSSINICA, B. et S. 
Hab. Cameroons Mountain, alt. 12,000 feet, with Bryum pallescens, 
Schw., Mann. 
The inflorescence in these specimens, as well as in those from Abys- 
sinia, is moncecious, and not dicecious, as described by Müller, Synops. 
p. 772. 
ORTHOTRICHACEA, Witten. 
' Zxaonpox, Hook. et Tayl. 
Z. SEMITORTUS, sp. nov. Dioieus, caule subunciali dichotome ramoso, 
foliis e basi brevi erectiuscula divergentibus semitortis elliptico-lan- 
ceolatis basi angustatis angulis decurrentibus integerrimis nervo sub 
apice latiusculo acuto evanescente carinatis, cellulis rotundatis distinc- 
tis sublevibus basi vix ullis diversiformibus, perichztialibus confor- 
mibus, theca in pedunculo 3-4-lineari ovali plicata, collo pyriformi, 
operculo subulato obliquo, peristomio ciliis 8 brevibus. 
Hab. Cameroons Mountains, alt. 8000 feet, Mann. 
A large species, resembling Z. Reinwardti, Schw., but with entire leaves. 
Macromirrivum, Brid. 
M. LEVATUM, sp. nov. Czespitosum, ramis erectis ramosis, foliis patenti- 
recurvis siccitate tortis late lanceolatis, apice in mucronem acuminatis 
nervo percurrente carinatis, marginibus uno latere inferne reflexis su- 
perne minute crenulatis, cellulis basi elongatis angustis, nonnullis 
paulo supra basin grosse papillosis, medium versus in parvas rotun- 
datas diametro circiter sy uncii metientes leves transeuntibus, 
perichztialibus paulo latioribus erectis, theca in pedunculo elongato 
globoso-ovata collo sensim attenuato plicata, operculo conico subulato, 
calyptra nuda thecam totam tegente, peristomio simplici. 
Hab. Cameroons Mountain, alt. 8000-10,000 feet, on trees and rocks, 
Mann. 
Allied to M. sulcatum, Hook., and, like it and its near allies, with a small 
triangular mass of calymperoid cells on one side of the nerve at the base 
of the leaf. The capsule is slightly and irregularly plicate when old ; 
before the fall of the operculum it is smooth. 
M. MENZIESII, sp. nov. M. levato simillimo, foliis late lanceolatis 
nervo excurrente carinatis, cellulis basi elongatis angustis papillosis 
superioribus rotundatis obscuris diametro circiter 7,57 uncii metien- 
tibus, theca in pedunculo elongato lzvi basi plicata late ovata, operculo 
conico subulato, peristomio simplici, calyptra nuda. 
Hab. Sierra Leone, Menzies in Herb. Hooker. Fernando Po and Island 
of St. Thomas. 
Very nearly resembling the preceding species and M. sulcatum ; but the 
