52 MR. MITTEN ON SOME NEW SPECIES OF MUSCI 
clentes aequantibus in membrana ad tertiarn partem longitudinis dentium exserta. 
Habitu staturaque S. radiculosi. 
Hab. On decayed wood, Fernando Po {Barter). 
Very nearly resembling S.radiculosum = Hookeria radiculosa,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. M tiller, 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. perichaetium and male flower; 
and 5. a portion of the peristome (all magnified). 
S. rivtilare, Mitten. Ramis elongatis ; foliis subcompressis ovato-lingulatis acutis basi 
eontractis, nervo crasso paulo infra apicem evanido, marginibus superne erosis; 
cellulis superioribus minutis ovalibus obscuriusculis, basi brevioribus subquadratis. 
S. radiculoso robustius 
Hub 
bottoms of 
Ni 
firmer substance of its leaves allied to S. radiculosum 
more 
Tab. V. fig. 4. 1. Plant (of the natural size) ; 2. a leaf (magnified). 
N 
Neckera, Hedw. 
Mitten. Monoica; foliis perichaetialibus inferioribus parvis apicibu 
patulis, interioribus magnis latis ellipticis 
elongato patulo 
theca ovali-cylindracea brevi-pedicellata immersa, opereulo aeuminato-rostrato, 
calyptra mitriforini vel uno latere fissa ramentis obtecta.— N. undulatce simillima. 
Pilotrichum undulatum, Beauv. Prodr. 
Hab, Afrique (Beauvais in Hb. Hooker.). 
Very closely resembling N. undulata ; but its perichaetium entirely different, the ramenta (i. e. leaf-like 
paraphyses) being absent. According to a specimen marked Daltonia} (Neckera) undulata, 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. perichaetium, capsule, and male flower (all 
magnified). 
N. flagellacea, Mitten. Caule primario repente, ramis arcuatis prolifero-ramosis pin- 
liLttis bipinnatisve filicinis planis compressis, ramulis apicem versus decrescentibus, 
saepe in filum elongatum produetis ; foliis in caulis parte stipitiformi erectis appressis 
ovatis acuminatis subenerviis, superioribus lateralibus, caulinis ramulinisque divari- 
catis latissime ovatis asymmetricis obtusiusculis obtusisque apiculo parvo terminatis, 
marginibus ubique crenulatis, nervo supra medium desinente ; cellulis inferioribus 
elongatis angustis, superioribus rotundatis minutis firmis. 
Hob, River Niger (Barter). 
Neckera Kor t halsiana , Dzv. et Molk. Brvol. Su 
more regularly 
Tab. V. fig. 6. 1. A 
leaf from the ramuli (both magnified). 
