MUSCI. (MOSSES.) (63) 663 
entire, more or less secund ; capsule oval or ovate-oblong, its mouth small; 
pedicels 5-7! high; operculum conic, scarcely rostellate; inner peristome a 
ceol 
Bartramia; sporules light a their diameter one half greater than 
in No. 1.—(Pterigynandrum intricatum, Hedw.) — Trees and logs; common. 
(Tab. IV.) 
3. P. velutima, W.P. Sch. Exceedingly like and perasee' ala 
with No. 2; leaves with fewer quadrate alar cells; capsule ¢ 
larger ; extcedbeis m decidedly rostellate ; teeth of the peristome more coe ar- 
batons porraee bordered their ‘whole length by t Tr peristome ; 
sporules dark yell erat granulated, wl a dant twice as great as in 
the first species. Bex g s, Columbus, 
(P. PoLYANTHA, a common ashi ciate aaa found in British America 
y Drummond, has the peristome of No, 1, with the capsule and short-conic 
operculum of No. 2.) 
73. HOMALOTHECIUM, Bryol. Europ. (partly.) (Tab. V.) 
Calyptra cuculliform, hairy. Operculum conic, subrostellate. Capsule ovate- 
cylindrical, regular and erect, or = eb e and incurved, pedicellate, annulate 
Peristome double; the exterior 6 linear- lanceolate teeth, with clos 2 Wticala- 
prostrate, closely and pinnately branched leaves shining, costate, serrulate, 
with an Drader areolation. — (Name from éuadds, — and Onxn, 
a capsule ; applicable to the type ners hs genus, Leskea sericea, Hedw.) 
1. H. subcapillataum, Bryol. Europ. Monecious; leaves elliptical 
or obovate-elliptical, suddenly acuminated, not striate, serrulate ; costa single or 
forked, aoe half-way ; at aha ugh ; ave cs slightly incurved ; 
Schweegr. 
t. 110. Pterigynandrum brachycladon, Bria Bryol. Univ. 2. p. 185.) — A small 
species resembling Pylaiszea intricata, and growing with it on trees: common. 
(Tab. V.) 
74. PLAT YGYRIUM, Bryol. Europ. (Tab. V.) 
Calyptra cuculliform, elongated, slightly spiral. Operculum conic, short-ros- 
rect, pedice 
ee membrane obsolete. Annulus very large. Inflorescence diecious. — 
Rai species, with prostrate closely entangled subpinnate pest and 
blog Halbiliie iébitate leaves, with a linear areolation. — (Name composed 
of m\arts, large, and yupés, ring, referring to the annulus.) 
1. P. répens, Bryol. Europ. Branches short, rather julaceous, ascend- 
