610 (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. 
b. Leaves not papillose, complanate.. 
76. NECKERA. Cilia from a narrow ced Leaves un : 
75. CYLINDROTHECIOM, Cilia from a narrow base. Leaves smooth. 
77. OMALIA. Cilia from a broad base : aaisilaroctaiait 
c. Leaves not complanate. 
ie te Es ee 
62. LEUCODON. Pericheth very long. Calyptra smooth. 
63. LEPTODON. hee mr very long. Calyptra hairy. 
72. PYLAISMA. Perichzth short. rei smooth. 
2474 4, Stn We Alls 
. ANAC ANPODON. Teeth of the peristome hie wh 
PLATYGYRIUM. Teeth of the peristome broadly m 
RI 
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rg . 
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th long. 
_ DICHELYMA. Perichxth long. Inner caeca as in a Foti ito. 59. 
a far enla ine]? 
_Sperancaredapeniteiteet — peristome a — oe to the tenth. Calyptra hairy. 
HYPNUM. inate cilia: cili- 
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ole present. Calyptea smooth. 
B. Calyptra mitriform. Peristome double ; its teeth 16. 
* Capsule immersed, erect. 
59. FONTINALIS. Inner peristome of 16 cilia connected by cross-bars. 
61, CRYPHAA. Inner peristome of 16 free and subulate cilia, 
* * Capsule exserted, horizontal. 
78. HOOKERIA. Inner peristome of 16 carinate cilia: cilioles absent. 
Sunorprr I. SPHAGNACEZE. 
1. SPHAGNUM, Dill. Pvar-Moss. (Tab. I. ) 
Calyptra irregularly ruptured in the middle. Operculum convex, depressed. 
ee a sessile on the pedicellate Hoag Peristome none. tn 
rescence m: dicecious : antheridia roundish, with a lon 
i sigs in the axils of the perigonial sais at the clavate extremities of 
short branches. —Large, soft, flaccid, and usually pale-colored plants, emacs 
it 
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concave, with a peculiar reticulation, composed of two kinds of cellules, one kind 
raislées large, sub-fi usiform, colorless, perforated, and lined with a fila- 
ment (fibrillose), except in No. 10; the other kind (ducts) much smaller, linear, 
chlorophyllose, running between the contiguous walls of the utricles and form- 
ing the angular-serpentine network. (Zdyvos, the ancient name.) Cross-sec- 
tions of the leaf (see Sulliv. in Mem. Amer. Acad. IV. p. 174. t. 4. B.), showing 
the form and relative seed of the utricles and ducts, are of service in deter- 
mining the species, as follows : 
* Ducts somewhat ie RII situated centrally between the angular-rotund utricles, 
i cialis whaceas dana’ de leaf. 
