652 
MUSCI. (MOSSES.) 
smooth capsule, and yellowish-green foliage somewhat crisped, are 
good marks of this species. 
4. O. speciosum, Nees. Leaves recurved-spreading, lanceo¬ 
late , pointed , the margins revolute ; capsule exserted, obsoletely groov¬ 
ed.— Trees, banks of the St. Lawrence River. A large species with 
a loose mode of growth, and reddish-brown foliage. 
5. O. StrangKlatlllll, Beauv. Leaves lanceolate , obtuse; 
capsule immersed , grooved, with an inner peristome of 8 cilia (absent, 
fide Schwcegr .); calyptra smooth or slightly hairy. — Trees; extreme¬ 
ly common, much smaller than any of the preceding (5 #/ -8 ,f high), 
with a condensed mode of growth, and leaves large in proportion. 
18. DRUMMONDIA, Hook. Drtjmmondia. 
Calyptra large, cuculliform, beaked, ventricose and somewhat 
plaited at the base. Capsule terminal, exserted. Peristome of 16 
very short and truncated teeth. Lid convex-beaked. Inflores¬ 
cence gemmiform, axillary. (Named for the late Th. Drummond.) 
1. I>. clavellsita, Hook. Stems prostrate and creeping, 
throwing up thickly crowded erect branches, from the extremity of 
which arise the pedicelled ovate capsules; leaves oblong, pointed, 
densely imbricated ; the minute areolse roundish; nerve vanishing 
near the apex; beak of the lid long, oblique from a convex base. 
(Orthotrichuin clavellatum, Auct.) — Bark of trees, adhering very 
closely, and forming large, dark-green patches. 
Tetraphide^:. 
19. TETRAPIIIS, Hedwig. Four-toothed Moss. 
Calyptra mitriform, plaited and rather lacerated at the base. 
Capsule terminal. Peristome single, of 4 three-sided-pyramidal 
teeth longitudinally ribbed on the back, not articulated. Lid con¬ 
ic. Inflorescence monoecious, terminal. (Name formed of rerpa, 
four, and (pvs , produced ; from the 4-toothed peristome.) 
1. T. pcllucida, Hedw. Stems sparingly branched, lower 
leaves minute ; upper ones ovate-lanceolate and oval, pointed, nerved 
to near the apex; capsule oblong-cylindrical. — Woods, on rotten 
wood, very common. 
Trichostomacex. 
20. TRICHOSTOMUM, Hedwig. Trichostomcm. 
Calyptra cuculliform. Capsule terminal. Peristome of S'2 ca¬ 
pillary-filiform teeth approximated in pairs. Lid elongated-conic. 
