94 MR. W. MITTET^^ ON THE MOSSES Or 



F. iNTBGERRiMUS {Mitten). Dioicus? caule humili caespitoso ramoso, 

 foliis plurijiigis in frondem linearem approximatis patentibus lineari- 

 liinceolatis apice obtusiusculis nervo concolori sub apice evanido 

 lamina vera apice ad medium producto insequali uno latere rotundato 

 dorsali basi sensim angustato, omnibus laminis immarginatis integer- 

 rimis eellulis diametro circiter yoVo uneiae metientibus limitibus crassi- 

 usculis, perichajtialibus conformibus, theca in peduneulo brevi apicali 

 crassiusculo suberecta brevi ovali, operculo subulate brevioie. 

 Hab. Tasmania, Cheshunt, Mr. Archer. 



Half an inch high. Seta scarcely two lines long. In general appear- 

 ance nearly allied to F. pallidus, but its leaves are entire, the cells 

 smaller with thicker walls, male flowers absent. In the few specimens 

 yet seen, the plants are, above brownish yellow, below black. 



2. Mniopsis, gen. nov. 



Acrocarpica. Folia eellulis hexagonis areolata. Peristomium externum 

 dentibus 16 ; internum processibus alternantibus e membrana exsertis. 

 Calyptra mitriformis parva. 



M. PLUMULA {Mitten). Dioica, gregaria, caulibus siraplicibus erectis 

 inferne foliis minutis remotis superne majoribus in caule fertili ho- 

 rizontaliter insertis patentibus ovatis comalibus perichaetialibusve 

 ligulatis obtusis, in caule sterili distichis verticalibus oblongo-ovatis 

 acutis obtusisve patentibus decurrentibus omnibus integerrimis nervo 

 sub apice evanido eellulis hexagonis limitibus crassiusculis, theca in 

 peduneulo bilineari gracili ovali cylindrica sequali, operculo subulato 

 recto, peristomio externo dentibus longissimis angustis rubris siccitate 

 incurvis cirrhatisque, interno processibus ciliiformibus brevibus in 

 membrana brevi exserta, flore masculo foemineo similis in caulium 

 apicibus parvo capituliformi, antheridiis minutis brevibus, paraphy- 

 sibus nullis. 

 Hab. Tasmania, below the quarry, Ovens Creek. 



Stems from one-fourth to half an inch high, dull green, considerably 

 resembling some small species of Fissidens ; its affinity is, however, to 

 Schistostega, with which it agrees in the vertical insertion of the leaves 

 of its barren stems, but recedes in the presence of a rather stout nerve 

 and the regular hexagonal cells. In the structure of its peristome it 

 approaches to Aulacomnion. The calyptra is smaller in proportion than 

 that of Tetraphis or Tetrodontium. 



3. Leptostomum, S. Brown. 



L. inclinans, R. Brown. (L. flexipile, C. MilUer, Bot. Zeit. 1851, p. 547.) 

 Hab. Tasmania, Cheshunt, Mr. Archer. 



4. Aulacomnion, Schw. 

 A. Gaudichaudi. (Leptotheca, Schw.) 



