156 MR. W. MITTEN ON THE MUSCI AND HEPATICZE 
sule and incomplete peristome, this species has the same ratio to H. sale- 
brosum as H. sericeum, L., has to H. lutescens, Huds. 
(Eurynchium, Schimp.) 
H. SPICULOSUM, sp. nov. Monoicum, caule laxe czspitoso fruticoso, 
pinnatim ramoso, foliis patentibus flaccidis suborbiculari-ovatis acumi- 
natis rameis oblongo-ovatis breviter acuminatis marginibus serrulatis, 
nervo ultra medium evanido, cellulis elongatis, perichetialibus e basi 
oblonga erecta subulato-attenuatis patulis, theca in pedunculo elon- 
gato spiculoso aspero rubro ovali horizontali, operculo subulirostrato, 
peristomio interno ciliis singulis inter processibus squilongis per- 
foratis in membrana ad dentium dimidium exsertis. 
Hab. Cameroons Mountain, on trees, Mann. 
Resembling H. Swartzii, Turner, but with more attenuated branches, 
more flaccid leaves, and removed from its near vicinity by the inflores- 
cence, and thus more nearly agreeing with H. remotifolium, Grev., H. spe- 
ciosum, Brid., and H. austrinum, Hook. et Wils., all which are more robust 
and less fruticose. 
Merrorium, Brid. 
M. sERRULATUM, (Pilotrichum) Beauv. 
Hab. Fernando Po, Mann. 
(Cryptotheca, Hsch.) 
M. INVOLUTI¥OLIUM, sp. nov. Caule elongato arcuato pinnatim ra- 
moso, foliis imbricatis patentibus oblongis panduriformibus profunde 
concavis convolutis obtusis apiculo brevi convoluto terminatis nitidis, 
enerviis integerrimis, cellulis elongatis basi fuscis, alaribus paucis par- 
vis fuscis obscuris. 
Hab. Sierra Leone, Barter ; also in Herb. Hooker. from the same place, 
given by the Horticultural Society. 
Stems three inches long, branches about one inch long, somewhat similar 
to M. Vitianum, Sullivant, but less rigid, and leaves more elongate and 
obtuse, and the apiculus is shorter. 
M. IMBRICATUM, (Pilotrichum) Beauv. 
Hab. Cameroons Mountain, alt. 4000-7000 feet; Clarence Peak, Fer- 
nando Po, alt. 8000 feet, on trees, Mann. Sierra Leone, Barter. 
Tracuytoma, Brid. 
T. STIPITATUM, sp. nov. Ramis erectis dendroideis, stipite elongato, 
ramulis in fronde obliqua planiuscula dispositis, foliis hastatis com- 
pressis subquadrifariis substriatis late ovatis obtusis acutatis plicatis 
appressis, nervo tenui ad } evanido, apice dorso prominente den- 
tiformi, marginibus serrulatis, cellulis elongatis omnibus conformibus, 
floribus masculis gemmiformibus in ramis primariis secundariisque 
dispositis. ° 
Hab. Fernando Po, alt. 7500 feet, Mann. 
