FROM THE CAMEROONS MOUNTAIN AND RIVER NIGER. 161 
LESKEACEA, Mitten. 
LzskEA, Hedw. 
(Thuidium, Schimp.) 
L. INTRICATA, sp. nov. Monoica, intricate czespitosa, caule phyllidiis 
brevibus sparsis, foliis patentibus latissime hastatis subulatis acumi- 
natis minute serrulatis, nervo tenui in apice evanido, rami nudi, foliis 
hastato-ovatis acutis ramulinisque compressis ovatis obtusiusculis api- 
culo brevi, cellulis parvis rotundatis subobscuris papillis brevibus nervo 
sub apice evanido, perichztialibus erectis ovato-lanceolatis subulatis 
subintegerrimis lzvibus, theca in pedunculo levi elongato cylindracea 
subzquali suberecta, operculo subulirostrato, peristomio interno pro- 
cessibus elongatis in membrana brevi exserto, ciliis nullis. 
Hab. Cameroons Mountain, alt. 7000 feet, on trees, Mann. 
Allied to L. Haplohymenia, Hook, and to L. leptoclada, Taylor. 
L. RAMUSCULOSA, sp.nov. Monoica, caule phyllidiis sparsis, foliis cauli 
latioribus latissime cordato-hastatis acuminatis, margine inferne planis 
superne crenulatis, nervo in apice evanido, ramis nudis, foliis late ovatis 
acutis, ramulinis ovatis obtusiuseulis nervo sub apice evanido margi- 
nibus minute crenulatis, cellulis rotundatis obscuriusculis breviter 
papillosis, perichztialibus erectis e basi suboblonga superne dentato- 
lacera acumine subulato elongato serrulato, theca in peduneulo levi 
elongato rubro horizontali cylindracea inzquali, peristomio interno 
processibus ciliis tribus interpositis in membrana ad 3 dentium lon- 
gitudinis producta. 
Hab. Clarence Peak, Fernando Po, Mann. 
Larger than L. versicolor, Hsch., and different from any described 
species, with monoicous inflorescence in the laceration of its perichetial 
leaves; among the'dioicous species this character is frequently ob- 
servable. 
CALLICOSTELLA, Mitten, 
C. AFRICANA, Mitten. 
Hab. Fernando Po, Mann. 
C. ABRUPTA, sp. nov. Dioica?, caule prostrato intricato gracili rigido, 
foliis oblongo-ovatis apice truncatis, nervis brevibus ad } folii longitu- 
dinis productis, marginibus crenulatis, cellulis elongatis papillosis, peri- 
chetialibus oblongo-ovatis acutis, theca in pedunculo elongato cygni- 
colli flexu superne scabro ovali collo sensim attenuato pendula, oper- 
culo conico curvirostrato, peristomio interno processibus ciliis singulis 
brevioribus interpositis. 
Hab. Fernando Po, Mann. 
Less than its allies C. cymbifolia, Hampe, and C. pallescens, Hook. et 
Wils., but agreeing with them in the shortly nerved leaves. 
