51 
III. On some new species of 'Musci and Hepaticse in the Herbarium (?/Sir W. J. Hooker 
collected in tropical Africa, chiefly by the late Dr. Vogel and Mr. Barter. By 
William Mitten, A.L.S. 
Read March 15th and June 21st, 1860. 
Leptotrichum, Hampe. 
L. nitidulum. Dioicum, gracillimuni, lmmile ; foliis erecto-patentibus e basi latiore 
sensim angustatis lanceolatis obtusiusculis integerrimis, nervo ubique a pa-ina 
distincto percurrente, cellulis basi infima majoribus oblongis inde angustis mollibus'; 
pericksetialibus obtusioribus ; theca in pedunculo triliueari gracillimo luteo erecta! 
late ovali, ore parvo, operculo subrecte subulate, peristomio dentibus parvis rubris 
rugulosis solidis, annulo late composite trigone; planta mascula ramis brevibus 
floribus gemmiformibus terminatis.— Z. exiguo simile. 
Hab. On the earth. River Niger (Barter). 
More slender than L. exiguum=TVie$sia eocigua, Schw. = Dicranum xanthodon, Hook., inhabiting the 
West Indies and South America, and with more shining pale-green leaves. 
Tab. V. fig. 1. 1. Plant (of the natural size); 2. a leaf, 3. the capsule, 4. the same after the fall of 
the operculum, 5. a portion of the peristome, and 6. a fragment of the annulus seen transversely 
(all magnified). 
Stereodon, Bridel ; Mitten, Muse. Ind. Orient, in Linn. Journ. Bot. Suppl. vol. i. p. 92. 
S. Barteri, Mitten. Monoicus ; foliis imbricatis late ovatis brevi-apiculatis concavis, 
margine (sicco) recurvo integerrimo, nervis binis brevissimis, cellulis alaribus pluri- 
bus quadratis viridibus, superioribus elongatis angustis ; pericluetio ma^no ■ foliis e 
m 
basi ovata convoluta lanceolatis, internis erectis, paraphysibus exsertis; theca 
pedunculo brevi luteo perichaetium paululo superante ovali, peristomio dentibus ? 
Habitu S. longiseti, sed gracilior. 
Hab. On trees in deep ravines. Nupe ; River Niger (Barter, 1422). 
Pale yellowish green, shining. Remarkable on account of its very short seta; in other respects closely 
Neck 
agreeing in structure with S. longisetus 
Tab. V, fig. 2. 1. Plant (of the natural size); 2. a leaf; 3. perichaetium, male flower, and capsule 
(magnified) 
Stereophyllum, Mitten, Muse. Ind. Orient. 1. c. p. 117. 
S. nitens, Mitten. Monoicum ; foliis elliptico-lingulatis basi contractis apice subacutis 
ovatis acuminatis parce serrulatis ; theca in pedunculo gracili rubro parva ovali incli 
nata horizontalive, operculo brevi-rostrato, peristomio interno processibus lon^itudin 
h2 
M SOURr 
