. 34 MUSCI. (MOSSES.) 
9. O. Canadénse, Br: & Sch. Differs from the preceding species in its 
‘more acute leaves, its shortly-exserted capsule smaller and not so constricted 
under the mouth, and. in the 16 cilia of the inner peristome.— Central Ohio: 
rare; on trees. 
10. O. affime, Schrad. Larger and coarser than any of the foregoing ; 
leaves ence rather obtuse, revolute (the upper ones rather undulate) 
n the margins, strongly papillose on both surfaces ; capsule elliptic-oblong with 
a neo apophysis, emersed ; cilia as in No. 7; calyptra slightly hairy, green- 
ish. — Lake Superi q 
11. O. specidsum, Nees. Stems elongated, 1’-2' high, loosely ezspi- 
tose ; leaves lanceolate, keeled, with recurved margins ; capsule shortly exserted, 
tapering into the pedicel, indistinctly striated, when dry ribbed near the mouth 
only; cilia of sah eal 8; calyptra large, very hairy. — Trees; on banks of 
the St. Lawrence River. (Et.) 
12. O. lei PO EaEE » Br. & Sch. Size and mode of growth much as in 
the last ; — dietountabed by its papenle-s without striae, and entirely smooth 
when dry; an y the 16 large cilia of the peristome. — Trees, 
Lake tom yoo (Eu.) 
’ 
§ 2. Capsule much exserted. Monccious. 
13. O. Ludwigii, Schwegr. Stems mostly decumbent ; leaves linear- 
lanceolate, somewhat fasciculate, when dry slightly twisted, the margins plane or 
slightly undalate ; ite ear pyriform, nas dry very much contracted and plicate 
at the mout er peristome absent; calyptra moderately hairy, laciniate at 
big: Bee trees, Alleghany i. (En.) 
. O. Hutchimsia, Smith. Stems aggregated in rather loose tufts ; 
Sites ope carinate, scarcely reflexed on the margins, when dry erect-ap- 
ot twisted ; capsule subclavate, with 8 broad strie, the apophysis grad- 
ually pace into the long pedicel; cilia of the peristome 8; calyptra large, 
copiously hairy. — Rocks ; common in mountainons districts. (Tab. 16.) (Eu-) 
15. O. crispuma, Hedw. Stems closely tufted ; leaves linear-lanceolate 
from a dilated base, much contorted and crisped when dry, ges undulated ; 
capsule clavate, when dry constricted under the mouth, with 8 strong ribs con- 
tinned down the very long tapering apophysis ; peristome with 8 cilia of a dou- 
ble row of cellules ; calyptra very hairy; sporules brown. — Trees, Alleghany 
Mountains. i ) 
16. ©. crispulwum, Hornsch. More delicate than the last; leaves mar- 
rower and oo peer when dry ; capsule shorter, pale, of thin texture, when 
dry not contracted below the mouth, its ribs less distinct; apophysis shorter, 
passing naga abruptly into the pedicel; sporules green rees, Alleghany 
Mountains. En.) 
172.0, Sea Brid. Very closely allied to the last two species ; fro 
No. 15 it differs in its less crisped leaves, and deeper-colored larger pee 
from No. 16, by the narrowed mouth of the eapsule and the much longer apor 
physis; from both by its longer pedicel, and the cilia of the peristome of but 
one row of eellules. — White Mountains, N. Hampshire, Oakes: rare. (Ea.) 
