SOMK ^'EW (ilCXETlV OF MOSSES 103 



ano^ustissinie incurvis. Costa valida, fusca, basin versus 100-120 /x 

 lata, bene delinita, supra dorso carinata, hevis, ad apiceni inucrone 

 vel cuspide brevi Integra excurrens ; sectione biconvexa, duces plures 

 (circa 10) medianos, cellulas stereideas ventrales et dorsales, cellulas 

 externas ac ventrales ac dorsales paullo nee tamen multo majores 

 exhibens. 



Celluhe superiores perobscurae, longitudinaliter seriatae, Sulxpiad- 

 rato-rotund;e, circa 8^ latie, parietibas finuis vix incrassatis, per- 

 minute sed dlstincte papillosie, infra sensim elongata^, parietibus 

 valde sinuato-porosis (ad instar (.rrininiiiB vel iibaconiitrii), deinde in 

 cellulas basilares la3ves s^epe raptini transeuntes ; ad niargineni medio 

 folio a limbo albo lato -i-o seriato optime delimitatas. Celluhe l)asi- 

 lares pulchre aurantiacse, perangustte, lineares, jmrenchymaticie, 

 parietibus firmis, angustis, valde porosis ; infimre ad alas s:epe laxi- 

 ores, latiores,. i)allidiores, oblicpie ascendentes, inde spatium triangulare 

 pellucidius quoque latere instruentes. 

 Cetera nulla. 



H.VB. Mountains, Moulmein, BIrmah ; Parish, 137 ; herb. 

 Mitten. 



Although tliis plant is unfortunately sterile, the leaf-structure is 

 so distinct that it seems quite impossible to include the species 

 in any known genus. The areolation is in some points j^erhaps 

 most reminiscent of some species of Tortella, but in other wavs 

 it differs widely. The broad h3''aline border is quite different from 

 the pale narrow extension of the basal cells which is found in many 

 species of that genus, being formed of long, narrow, very incrassate 

 cells, and is continued in 2-4i rows to tlie insertion of" the leaf, 

 usually more or less distincth^ differentiated from the inner basal 

 cells. It reaches above the middle of the leaf, usually to two- 

 thirds, and often higher. It is at times finely denticulate at the 

 margin. The transverse undulation, strongly marked when dry, is 

 also a distinct character. The areolation also is very distinct. The 

 upper isodiametrie cells are very obscure by reason of cristate, multi- 

 partite papilhe on the lumen ; towards the h)wer part of the unex- 

 panded lamina the cells gradually become elongate, and the papillfB 

 sparser and less distinct, while the cell-walls become highly sinuose 

 internall}'", as in the supra-basal cells of many GrimmicB, or the upper 

 cells of many Rhacomitria] contrary, however, to what takes place in 

 Rhacomitriiim, as the cells elongate more and more, the walls become 

 less sinuose instead of more so ; but they remain, at least near the 

 nerve, distinctly porose to the base. The greater part of the base is 

 in the older leaves at least of a bright orange colour, but in manv or 

 most of the leaves the linear firm-walled cells do not fill the entire 

 base, but narrow downwards towards the nerve in a cuneiform outline, 

 leaving a triangular alar patch of paler, wider, thin-walled cells 

 on each side, extending a shoi't distance outwards and upwards. 



It sometimes happens that the papillae of the upper cells become 

 lost (in passing into the basal ones) at about the point where the 

 cells themselves begin markedly to elongate, and in this case the 

 point of juncture with the smooth, elongate, orange basal cells 

 is very clearly marked. At other times the papilhe may continue 



