56 MR. MITTEN ON SOME NEW SPECIES OF MUSCI 
F. PORRECTUS, Mitten. Ca?spitosus, caule elongato rubro ; foliis patentibus siccitate im- 
mutatis elliptico-lanceolatis acuminatis, acumine ad caulis apicem leniter curvato, 
nervo percurrente, lamina vera ad medinm producta, omnibus laminis margine 
obscuriore subopaco limbatis, cellnlis distinctis diametro circiter 2- \o nncia3 meti 
entibus. 
Hab. On moist rocks. Niger {Barter), 
Growing in large patches, of a fresh green colour, here and there tinged with red, slightly glossy, in 
appearance 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. placcidus, Mitten. Dioicus? statura F.palmati; foliis pat entibns flaccidis late ellip- 
tico-lanceolatis apice acutis, nervo debili sub apice evanido, lamina vera ad medium 
producta, omnibus laminis hyalino-marginatis ; cellulis oblongis longitudine circiter 
-j-^00, latitudine 200-0 uncise mensura, pellucidis ; theca in pedunculo gracili rubro 
ovali erecta, operculo subulato. 
Hab. On the earth. Niger (Vogel). 
Similar to F. palmatus, Sw. 3 but with an erect capsule and less acuminate leaves. From the other 
African species it is readily known by its lax areolation. 
Tab. VI. fig. 18. 1. Plant (natural size) ; 2. the same, 3. leaf, 4. young calyptra (all magnified). 
F. Parkii, Mitten. Dioicus ? perpusillus ; foliis 4-5-jugis patentibus ambitu late ellip- 
tico-lanceolatis obtusiuseulis, nervo concolori percurrente, lamina vera ultra medium 
producta, lamina dorsali supra basin evanescente, omnibus laminis immarginatis 
integerrimis, cellulis minutis subobscuris diametro circiter sinjo uncise metientibus ; 
foliis perichsetialibus lateribus laminae verse insequalibus, uno latere apice libero in 
nervum ascendente ; theca in pedunculo brevi erecta sequali brevi ovali. 
Hab. Interior of Africa (Mungo Park). 
Yellowish green. Scarcely two lines high. The seta of the same length as the perichaetial 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 V. 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. Poliis e basi latiore erecta angustatis longe loriformi-lanceolatis 
latmsculis acutis patentibus, siccitate 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. convolute simile. 
Hab. Niger (Barter), 
