60 MUSCI. ‘(MOSSES.) 
67. CLASMATODON, Hook. & Wils. (Tab. 19.) 
Calyptra cuculliform. Operculum conic-rostellate. atl oval, erect, pedi- 
eellate. Peristome single: teeth 16, short, ] -2-divided into irregular awe 
remotely articu! . Annulus large, imperfect, somewhat persistent. Spo 
large. Inflorescence monecious.— Very small species, with creeping, entan- 
gled, irregularly branched stems, and broadly ovate-acuminate semi-costate 
leaves, of an oval-elliptical areolation. — (Name from xAdopa, a fragment, and 
ddar, tooth, descriptive of the peristome.) 
1. C. parvulus, (Hampe,) Hook. & Wils. Leaves concave, patent, 
reflexed on the margins below, acute or obtuse; areolation of the basal angi 
Clasmatodon pusillus, Hook. § Wils.)—On the bark of trees, in dry 
places, or on their roots in localities subject to inundations : very common in the 
States.— A variable species. (Tab. 19.) 
Tre XXVIII. THELIEX. 
68. THELIA, Sulliv. 
Calyptra cuculliform, narrow. Operculum conic, rostrate. Capsule ovate- 
cylindrical, erect, pedicellate. Peristome double; the exterior 16 long, linear- 
subulate, white, granulated, distantly articulated teeth; the interior a carinate 
membrane hie tgs 4 the length of the teeth, with or seid rudimentary 
cilia. — Growing in compact glancous- or yellowish-green mats ; stems villous, 
with a Sadia tomentum, creeping, throwing up densely crowded short and 
t co i 
(Name from 6y\n, a papilla, referring to the prominent pa- 
papillate cellules, 
pills of the leaf.) 
1. TV. hirtéMa, (Hedw.) Sulliv. — Leaves inclining to a dark yellowish- 
a hirtellum, Hedw.) — hic and trunks of trees in woods; 
2; “ asprélia, (Schimp.) Sulliv. Pe with No. 1, formerly con- 
founded with it; distinguished by the glancous-green color of its leaves, their 
papilla 2-lobed at the apex; and by the narrower, longer, and nodose teeth of 
the peristome, and , W. P. Sch.) — Northern 
and Middle States, and westward. 
_ 8. TW. Lesettrii. Sulliv. (Muse. Bor.-Amer., No. 249.) Near the last 
species ; ramification more fasciculate, not so condensed ; the branches abet 
leaves glaucous-green, with a bluish tinge, shorter, hstiniens sith 
the areolation much smaller, not so pellucid, the papille slobedat the apex 5 
Pedticel twice as long ; capscle longer, often slightly curved, the mouth with 
