10 MUSCI. (MOSSES.) 
65. ANOMODON. Cilia from a narrow base. Foliage yellowish green. 
68. THELIA. Cilia obsolete: a broad annular membrane present. Foliage glaucous-green. 
5. Leaves not papillose, to OG 
6. NECKERA, Cilia from a narrow base. Leaves undula 
7% CYLINDROTHECIUM. Cilia oat a narrow base. sears smooth 
77. OMALIA. Cilia from a broad base : ciliole present. 
ves not complanate. 
= Inner peristome a membrane adherent to the teeth. 
62. LEUCODON. Perichzth very long. Calyptra smooth, 
63. LEPTODON. Perichzth very long. i hairy. 
72. PYLAISHA. Pericheth short. Calyp’ 
stn TR nil} 
jl, ANACAMPT ODON. Teeth of the peristo me reflexed when 
ed. ‘Sonu aus ; 
. ng. ere — causa enermvne 
79, € PRP. £8 nati, A 
60. DICHELYMA. rerata iia Inner peristome as in Fontinalis, No. 59. 
+ Capsule inclined, unequal. 
73. HOMALOTHECIUM. “tamer peristome a manheane caewieee to the teeth. si <i 
80. HYPNUM. 
olz present. Cslyptra smooth. 
B. Calyptra mitriform. Peristome double ; its teeth 16. 
* Capsule immersed, erect. 
59. FONTINALIS. Inner peristome of 16 cilia connected by cross-bars. 
61. CRYPHAJA. Inner peristome of 16 free and subulate 
* * Capsule exserted, horizontal. 
78. HOOKERIA. Inner peristome of 16 carinate cilia: ciliole absent. 
Sunorper I. SPHAGNACER. 
1. SPHAGNUM, Dill. Pear-Moss. (Tab. 15.) 
Calyptra irregularly ruptured in the middle. Operculum convex, depressed. 
ene subglobose, sessile on the pedicellate ristome none. In- 
ula, Pe 
ence moncecious or dicecious : antheridia roundish, with a long pedicel, 
concave, with a peculiar reticulation, composed of two kinds of ge one kind 
(atricles) wast sub- fusiform, elias perforated, and lined wi 
ar (fibrillose), except in No. 10; the other kind (ducts) much he, linear, 
phyllose, running between the step mad walls of the utricles and form- 
angular-serpentine network. (Zddyvos, the ancient name.) Cross-sec- 
tions of the leaf (see Sulliv. in Mem. Amer. Acad. IV. p. 174. t. 4. B. e showing 
the form and relative heat of the utricles and ducts, are in deter- 
mining the species, a$ fo 
t Ducts. somewhat at ae centrally between the angular-rotund utricles 
not extending to either surface of the leaf. 
