56 MR. MITTEN ON SOME NEW SPECIES OF MUSCI 



F. POBKECTUS, Mitten. Csespitosus, caiile elongate rubro ; foliis patentibus siecitate im- 

 mntatis elliptico-lanceolatis acuminatis, acumine ad caulis apicem leniter eurvato, 

 nervo percurrente, lamina vera ad medium produeta, omnibus laminis margin e 

 obscuriore subopaco liml^atis, cellulis distinctis diametro circiter ^oVo uncise meti- 

 entibus. 

 Hub. On moist rocks. Niger {Bai'ter), 



Growing in large patches, of a fresh green colour, here and there tinged with red, slightly glossy, in 

 a])pearance nearly resembling F. rigidulus, H. f. et W., but with a margin, although distinctly cartilaginous, 

 like the nerve obscure. The fructification is evidently terminal, from the presence of archegonia on a 

 few of the stems ; but the perichaetial leaves have no difference in form from the cauline. 

 Tab. VI. fig. 17. 1. Plant (natural size) ; 2. portion of the stem and leaves (magnified). 



F. FLACCiDrs, Mitten. Dioicus? staturaP.^J«^;»ffii; foliis patentibus flaccidis late ellip- 

 tico-lanceolatis apice acutis, nervo debili sub apice evanido, lamina vera ad medium 

 produeta, omnibus laminis liyalino-marginatis ; cellulis oblongis longitixdine circiter 

 Y^ooj latitudine ginjo incise mensura, pellucidis ; theca in peduncnlo gracili rubro 

 ovali erecta, operculo subulato. 



Hah. On the earth. Niger {Vogel). 



Similar to F. palmatus, Sw., but with an erect capsule and less acuminate leaves. From the other 



African species it is readily known by its lax areolation. 



Tar. VI. fig. 18. 1. Plant (natural size) ; 2. the same, S. leaf, 4. young calyptra (all magnified). 



F. Pakkii, Mitten. Dioicus ? perpusillus ; foliis 4-5-jugis patentibus ambitu late ellip- 

 tico-lanceolatis obtusiusculis, nervo coneolori percurrente, lamina vera ultra medium 

 produeta, lamina dorsali supra basin evanescente, omnibus laminis immarginatis 

 integerrimis, cellulis minutis subobscuris diametro circiter 5-^0 uncite metientibus ; 

 foliis periclisetialibus lateribus laminae vera? intequalibus, itno latere apice libero in 

 nervum ascendente ; tlieca in peduncnlo brevi erecta fequali brevi ovali. 



Hah. Interior of Africa {Mungo Park). 



Yellowish green. Scarcely two lines high. The seta of the same length as the perichtetial leaves. 



This is probably the species gathered by Park when reduced to a deplorable state, and the contemplation 



of which so revived him as to enable him to proceed and obtain succour. It will be easily seen that it is 



remote from the European F. bryoides, to which it was formerly referred, and that it is more nearly allied 



to F, asplenioides, Sw., and F. obtusifolius, Wils. 



Tab. VI. fig. 19. 1. Plant (natural size) ; 2. the same, .3. leaf (magnified). 



POGONATUM, Brid. 



p. FLEXUOSUM, Mitten. Foliis e basi latiore erecta angustatis longe loriformi-lanceolatis 

 latiusculis acutis patentibus, siecitate incurvis falcatisve rigidis, nervo dorso superne 

 serrato, margine a basi ubi angustare incepit serrato, pagina superiore fere toto 

 lamellis brevissimis vix conspicuis obtecta ; floribus masculis foliis internis breviori- 

 bus latioribusque. — P. convoluto simile. 



Hah. Niger [Barter). 



