Salmon . — On the Genus Fissidens. 
123 
in the margins of the leaves, being regularly crenate, especially 
those of the vaginant laminae, and it is only where the sporadic 
incrassation takes place in the apical lamina that the margin shows 
any signs of becoming entire ; in F. nitens the margin is subentire, 
and the vaginant laminae, as well as the apical, show the sporadic 
incrassation, the limb of the vaginant laminae being sometimes 
composed of more or less prosenchymaticous cells; in F. nitens , 
var. neglectus , the incrassation is the most pronounced, *and forms 
in the vaginant laminae a broad bistratose limb of prosenchymatous 
cells. 
F. nigro-viridis, sp. nov. (Figs. 77-80). 
(F. geminiflorus , Dzy. e. Mlkb., var. nigro-viridis , Schpr. ms. in 
Herb. Kew.) 
Laxe caespitosus, subrigidus, olivaceo-viridis, infra nigrescens. 
Caulis erectus, i|-2j cm. altus, simplex vel parce ramosus, ad 
basin foliosus. Folia multiiuga, conferta, superiora plus minusve 
imbricata, inferiora remotiora, erecto-patentia, rigida, lanceolata, 
acuta, ijmm. longa, saepe paulum curvata, marginibus minutissime 
crenulatis vel subintegris, nervo validiore in apice dissoluto; laminae 
verae supra medium productae ; lamina dorsalis ad basin folii 
descendens ; cellulae 6-8 n, rotundato-4~6-angulatae laeves. Caetera 
ignota. 
P atria. Sarawak (O. Beccari, Crittog. di Borneo, No. 52). 
F. multijioro , Thw. et Mitt., habitu simillimus, sed foliis longioribus 
angustioribus, laminis veris haud limbatis differt. 
In Schimper’s. Herbarium this Moss is placed as a variety under 
F. geminiflorus , Dzy. e. Mlkb., but that species differs entirely in 
habit, and in the broader, distant and more patent leaves, with short 
laminae verae, usually percurrent nerve, and crenate serrate margins. 
F. Nicholsonii , sp. nov. (Figs. 81-91). 
Autoicus (rhiz- vel gonioautoicus), corticola, gregarius, laete viridis. 
Caulis erectus, vel ascendens, simplex, vel innovans 4-8 mm. altus, 
ad basin foliosus. Folia 4-12-iuga, -75-1 mm. longa, oblongo-lanceo- 
lata, acuta, remota vel apicem versus approximata, subopaca, nervo 
hyalino flavido percurrente ; laminae verae supra medium productae, 
apice subaequales, limbatae, limbo angusto sinuato-dentato flavido 
unistratoso e cellulis prosenchymaticis incrassatis composite ; lamina 
