FROM THE CAMEROONS MOUNTAIN AND RIVER NIGER. 165 
PLAGIOCHILA, Nees et Mont. 
P. SQUAMULOSA, sp. nov. Ramis elongatis subpinnatim ramosis apice 
decurvis, foliis patentibus imbricatis subdeltoideis apice obtusis, mar- 
gine dorsali inferne integerrimo recurvo arcuato apice totoque mar- 
ginis ventralis denticulato, ubi in caule descendente crispulo squa- 
mulis amphigastriiformibus varie lacerulis, cellulis rotundatis aqua- 
libus, perianthio obovato dorso alato, labiis rotundatis denticulatis, foliis 
involucralibus latioribus undulatis argutius dentatis. 
Hab. Cameroons Mountain, alt. 7000-8000 feet, Mann. 
Resembles P. corrugata, Nees ab E.; but the leaves are more rigid, 
undulated only at the base, and the margin more strongly toothed. 
P. picHotoma, Nees ab E. 
Hab. Cameroons Mountain, alt. 4000 feet, Mann. 
Lxroscyrnus, Mitten. f 
L. REPENS, sp. nov. Caule repente ramoso radiculoso, foliis explanatis 
late ovato-subrotundis apice rotundatis sinuve obtuso bidentatis basi 
cum amphigastrio sinu lato bidentato, dentibus intus uni- extus bi-den- 
ticulato uno latere coalitis, cellulis rotundatis limitibus tenuibus, in- 
tercalaribus distinctis, foliis involucralibus magis rotundatis apice sub- 
bidentatis basi saccatis, amphigastrio caulinis majore magis dentato, 
perianthio basi turgido apice compresso levi, labiis breviter dentatis. 
Hab. Clarence Peak, alt. 8000 feet, Fernando Po, on decayed wood, 
Mann. 
Entire plant, including the peduncle and rootlets, dark brown. In size 
similar to Lophocolea heterophylla, Nees ab E. 
Lornuocorza, Nees ab E. 
L. DEVEXA, sp. nov. Caule elongato parce ramoso, foliis sursum con- 
niventibus directione (explanatis) devexis ovatis ovato-oblongisque 
margine ventrali rectiusculo integerrimo dorsali arcuato basin versus 
uni- bidentato, amphigastriis satis magnis late ovatis apice breviter bi- 
dentatis lateribus utrinque angulato-bidentatis, cellulis subrotundis, 
interstitiis grossis. 
Hab. Island of St. Thomas, creeping on Sendtnera diclados, Endl., 
Mann. 
Resembling very nearly LL. trapezoides (Chiloscyphus), Nees ab E., but 
leaves more narrow. 
L. coapuNATA, Sw. 
Hab. Prince's Island, Barter. 
L. BIDENTATA, Nees ab E. 
Hab. Clarence Peak, Fernando Po, alt. 8000 feet, on trees, Mann. 
L. MURICATA, Nees ab E. 
Hab. Clarence Peak, Fernando Po, alt. 8000 feet (a few fragments only), 
Mann. 
