MUSCI. (MOSSES.) (81) 681 
To p. 628. 
. Didymo odon cylindricus, Br. & Sch. Diccious ; stems cespi- 
a 4!'-10" high, branched ; leaves a TTI spreading, fiexuous, 
i 
more or less undulate on the plane margins, co e apex ; capsule nar- 
rowly cylindrical, annulate, its walls thin ; ose site yellowish ; zy abe 
ros from a conic base; teeth of the peristome remotely articulated. — Ches- 
ter County, Pennsylvania, James. 
10. Mnium spinuldsum, Bryol. Europ. Hermaphrodite, cxspitose ; 
stems 1/-1}/ high, radiculose ; lower leaves coer remote, reddish, obovate ; 
upper leaves large, crowded, bright green, dec t, broadly obovate and ob- 
long-spatulate, shortly acuminate, with a ick, doubly spnalose-entat 
border; capsule oval, nerd endulous ; ope 
pedicels aggregated. ountains of New pshire, James. — Vi 
ery 
near M. spinosum, Bryol Pe .; found in British America by Drummond, but 
that has a dicecious inflorescence. 
To p. 655. 
Pilétrichum cymbifdlium, n. sp. Diccious; main stems 2! -3' 
a izoma-like, creeping, filiform, sparingly radiculose, with distant minute 
ping; 
-lanceolate ries scarcely visible to the naked eye ; primary Rainier 
faites slender, erect, 1/-14/ long, simple or irregularly and pinnately ra 
lose; leaves pale green, closely imbricated in 5 distinct spiral rows, case 
ie. strongly cymbiform-concave, their upper half with the margins 
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sib linearfasiform, flexuose; the cellules at the basal angles mi > 
opaque ; fertile igen numerous, paraphysated. —“ From a ove on a hum- 
m rida,” ex herb. Gray. 
Metedrium? péndulum, n. sp. Diccious (2); stems 7’—8S! long, 
divided, divisions with distant branches, all filiform, pendulous and flexile ; 
what broad membrane ‘aere m bnceateragens™ hicog large ; pericheth 
small; vaginula emergen ly n.— Western Louisiana, Teinturier, 
Prof. Riddell. —A einai ener with thread- om stems and cael 
To p. 661. 
Mr ia Careyana, add :— Capsule oval, with a conspicuous col- 
lum, inclined, annulate ; cilia 3 the inner peristome nodulose ; operculum hem- 
ispherical-conic ; wailiaale 9 3!-4" high. —Brattleborough, Vermont, Frost. 
Hypnum palustre, L. (sce p. 671) has also been found, with the last, 
by Mr. Frost. 
