52 MR. MITTEN ON SOME NEW SPECIES OF MUSCI 



dentes sequantibus in membrana ad tertiam partem loiigitudinis dentium exserta. — 



Habitu staturaqiie ^S*. radiculosi. 

 Hab. On decayed wood, Fernando Po [Barter). 



Very nearly resembling S.radiculosum — Hookeria radicuhsa, Hook. Muse. Exot. t. 5 1 ; but with leaves of 

 a more equal width above and below the middle, and contracted at the base, the margin slightly serrulate, 

 and the upper cells elongate. S.schistocalyx [Hypnum), C. Miillei', has shorter leaves, more sharpened 

 above, and with the upper cells nearly round. 

 Tab.V. fig. 3. 1. Plant (of the natural size); 2. a leaf ; 3. capsule; 4. perichffitium and male flower; 



and 5. a portion of the peristome (all magnified). 



S. MVULAKE, Mitten. B>amis elongatis ; foliis subcompressis ovato-lingulatis acutis basi 

 contractis, nervo crasso paulo infra apicem evanido, marginibus superne erosis ; 

 cellulis superioribus minutis ovalibus obscuriusculis, basi brevioribus subquadratis. 

 — ^S*. radlculoso robustius. 



Hub. On rocks in small rivulets at the bottoms of ravines. Nupe ; River Niger [Barter, 1420). 



In the firmer substance of its leaves allied to <S. radiculosum, but a larger moss, with leaves more 



narrowed below, and more acute at their apices. 



Tab. V. fig. 4. 1. Plant (of the natural size) ; 2. a leaf (magnified). 



Neckera, Hedw. 

 N. FOVEOLATA, Mitten. Monoica; foliis perichsetialibus inferioribus parvis apicibus 

 patulis, interioribus magnis latis elliptieis, vaginantibns, acumine elongate patulo ; 

 tbeca ovaU-cylindracea brevi-pedicellata inimcrsa, operculo acuminato-rostrato, 

 calyptra mitriformi vel uno latere fissa ranientis obtecta. — N. undulatai simillinia. 



Pilotrichum undulatum, Beauv. Prodr. 

 Hab. Afrique [Beauvais in Hb. Hooker.). 



Very closely resembhng A^. undulata; but its perichaetium entirely different, the ramenta [i.e. leaf-like 

 paraphyses) being absent. According to a specimen marked Daltunia} [Neckera) undulatu, from the 

 herbarium of Dr. W. Arnott, this species is found also at Rio de Janeiro. 



Tab. V. fig. 5. 1. Plant (of the natural size) ; 2. a leaf; 3. perichictium, capsule, and male flower (all 

 magnified). 



N. FLAGELLACEA, Mitten. Caule primario repente, ramis arcuatis prolifero-ramosis pin- 

 natis bipinnatisve filicinis planis compressis, ramulis apicem versus decrescentibus, 

 sa;pe in filum elongatum produetis ; foliis in caulis parte stipitiformi erectis appressis 

 ovatis acuminatis subenerviis, superioribus lateralibus, caulinis ranudiuisque divari- 

 catis latissime ovatis asymmetricis obtusiusculis obtusisque apiculo parvo terminatis, 

 marginibus ubique crenulatis, nervo supra medium desinente ; coUulis inferioribus 

 elongatis angustis, superioribus rotimdatis minutis firmis. 



Hub. River Niger [Barter). 



In size and appearance resembling Neckera Korthalsianu, Uzy. et Molk. Bryol. Surinam, t. ix. ; but 



its branches more regularly pinnate, and its leaves shorter, with a different arcolation. 



Tab. V. fig. 6. 1. A branch (of the natural size) ; 2. a lateral leaf from the middle of the branch, 3. a 

 leaf from the ramuli (both magnified). 



