632 (32) MUSCI. (MOSSES.) 
costate, plane on the margins ; areole above guttulate; below, enlarged oblong. 
(Name from (vyés, a pair, and 6dr, teeth, in allusion to the paired teeth.) 
i. poénicus, Br. & Sch. Stems }’-1/ high, cg leaves 
ne = when aad ‘ant scarcely exserted, 8-ribbed; peristome 
none; monecious; male flow mmiform. — Rocks, on the White Mountains 
of New Hamyshi, Oakes : Alleghany Mountains of Pennsylvania, Lesquereux 
(Tab. II.) sore 
alimesiit Br. & Sch. More elongated and branched than No. 
i; aiffering chiefly in its narrower and less concave perichetial leaves twice as 
long, the longer rostrum to the operculum, and the dicecious inflorescence. — 
ith No. 1, in similar places, according to Mr. Th. P. Jan (Eu 
. Z Sullivantii, Mull. ai 1/-2! high, +s with long filiform 
Fpketeba leaves subsquarrose from an erect half-clasping base, ai sh nei 
caye; the margins below patsy above plane and strongly serrate; frui 
unknown. — (Syrrhopodon excelsus, Sulli lleghan., No. 170.) — North 
a on rocks, ae of Grandfather Mountain, Gray & Sullivant: Black 
tain, Lesquer 
31. DRUMMONDIA, Hook. (Tab. IL) 
, cuculliform, rostrate, slightly plicate at the base, and papillose 
apex. Operculum obliquely long-rostrate from a convex base. apsule 
globose-oval or slightly obovate, soot edicellate. gle: teeth 
16, very short, truncate. Inflorescence dicecious: male flower yume _ 
Perennial, growin g on trees ; oa ti throwing up numerous share 
branches, bearing fruit on their summit; leaves oblong, costate ; areols minute, 
roundish. — =k Ramet = the late Thomas Dra nd, who made extensive and 
very valuable collections of North American Mos 
1. D. claveliata, Hook. Stems 2/-4! ie creeping, densely covered 
with radicels ; branches crowded, erect, nl 3’ high; leaves close, erect-patent, 
shortly eae costa ceasing with the apex. — Grows in deep-green and close 
in (3’-10! in diameter), on the bark of trees (particularly the Beech), 
Northern, os ae Western States. (Tab. IT.) 
Tre XIU. ORTHOTRICHEZ. 
32. ORTHOTRICHUM, Hedw. (Tab. II.) 
Calyptra large, campanulate, longitudinally plaited, crenate-lacerate at the 
base. or glabrous. O um short, a rostellate. Capsule pyriform, 
more or less ange apophy: dicellate, immersed or exserted, 8 or 16 
striated, ribbed when dry. Prrisiome ringle. or double, rarely wanting; the 
miform. 
or rocks, never on soil; stems usually erect, simple or branched by innovations, 
fertile at their summit; leaves crowded, elongated, costate nearly to the point, 
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