18. o . b r a c h y tr ic h um , Schimp. Plants short, about one
c.m. long, in pale green tufts, blackish and streaked with yellow
when old: leaves oblong-lanceolate, the upper longer, linear-
apiculate, acutely carinate, suhrevolute or reflexed on tlie borders
: male flowers terminal on separate branches : calyptra pale
straw-color, bearing a few short hairs at the apex ; capsule tliin,
oblong, subcylindrical in connection with a someu'hat long
collum, light brown passing to yellow, with 8 dark-colored strit^
ribbed when dry; teeth 8, small, higeminate, entire, with large
punctulate areoles ; cilia 8, smooth, as long as tlie teeth. Lesq.
& James, Proc. Am. Acad. xiv. 140. 0. obtusifolium, Drumm.
Muse. Amer. n. 157.
Hab. On trees; Upper Canada to the Rocky Mountains {Drummond).
19. O. S tr a n g u la tum , Beauv. Plants very small, in small
loose dirty green tufts, half a c.m. long: leaves half-spreading
Avhen moist, linear-lanceolate from an oblong base, angularly
pointed or blunt at the apex, revolnte on the borders ; upper
areolation round, small, close, slightly papillose, long and quadrangular
toward the base; perichætial leaves longer,, erect,
somewhat sheathing : calyptra nearly naked : capsule short-
pedicelled, half-emergent, oblong-obovate, distinctly 8-costate
when dry, strongly constricted under the orifice, dirty brown
when old ; lid conical, obtusely apiculate ; teeth 8, higeminate,
dirty yellow, granulose, reflexed when dry ; cilia strong, as long as
the teeth, formed of a double row of cells. — Prod. 81 ; Schwaegr.
Snjipl. ii. 2. 33, t. 54; Sulliv. Muso. Allegh. n. 128, Mosses of U.
States, 33, and Icon. Muso. 57, t. 36.
Ha b . On trees, rarely on rocks; very common.
* * ■» * Capsule exserted, long-cylindrical when dry.
20. O. te n e llum , Bruch. Plants very small, tufted : lower
leaves broadly lanceolate, the upper longer-lanceolate, revolnte
on the borders, acute or blunt ; areolation large, not papillose :
calyptra long and narrow, yellowish green, rarely pilose : capsnle
emergent, oblong-cylindrical, decurrent to a long collum covering
the whole length of the pedicel, broadly reddish-striate,
broadly costate and constricted under the orifice when dry and
empty; lid short; peristome short, the teeth higeminate, bifid
at the apex, pale; cilia a little shorter, of a double series of
cells. —Brid. Bryol. IJniv. i. 786; Bryol. Eur. t. 212.
H a b . On trees, at the base of the Rocky Mountains (E. Hall, Wolf
& Bothrock).
21. O. con sim ile . Mitt. Plants very small, in loose yellowish
green tufts: leaves open, recurved when moist, soft,
obloiio- at base, gradually narrowly lanceolate, with borders
revolute all around, obscurely papillose ; cells rectangular, nearly
diaphanous toward the base, round and small in tlie upper part :
calyptra with few hairs : capsule without collum, oval, exserted
upon a pedicel longer than the capsule, marked with 8 yellow
striæ, narrow, sublinear, enlarged at the orifice or urceolate and
8-plicate when dry ; lid red-margined, convex-apioulate ; teeth
16, joined in pairs at the base, with 7 or 8 articulations, pale
yellow, minutely papillose on both faces ; cilia 8, as long as the
teeth, enlarged at base, smooth. — Journ. Linn. Soo. viii. 24;
Sulliv. Icon. Muse. Suppl. 59, t. 43.
H a b . Vancouver Island [Lyall).
Allied to O. pulchellum, differing especially in the shorter and broader
capsule, tlie teeth papillose, not verraiculate, the cilia only 8, entirely
smooth, and the leaves tiniformly papillose. From 0 . cylindroccirpum it
is distinguished by its shorter capsule and somewhat longer pedicel, and
by the soft longer taper-pointed leaves.
22. O. cylindrocarpum, Lesq. Plants short, slender,
loosely pulvinate, dark green : leaves appressed when dry, erect
when moist, long-lanceolate from the enlarged base, blunt-
pointed; borders revolute to near the apex; upper areolation
in dense ovate-quadrate minutely papillose cells, basal loose,
oblong and quadrate : calyptra large, more or less hairy, coverhig
the capsule to near the base: capsule long-pedicelled, cylindrical
or narrowly oval, pale green or yellowish, 8-striate, narrowly
8-costate when empty ; lid conical-apiculate ; teeth 16, close, in
pairs, granulose; cilia 8, stout, of a double series of cells,
nearly as long as the teeth. — Trans. Amer. Phil. Soo. xiii. 6, and
Proc. Calif. Acad. i. 17 ; Sulliv. Icon. Muse. Suppl. 70, t. 52.
IIAB Rocks and trees, Oakland and Dardanelles Caflon (Bolander).
0 Coulteri, Mitten (Journ. Linn. Soc, viii. 25), differing in the leaves
a little more distinctly papillose, the calyptra covered with short appressed
liairs and tlie cilia shorter than the teeth, is evidently a mere variety. As
shown in Sullivant’s figure, tlie hairs of tlie calyptra are always appressed,
and the cilia slightly shorter than the teeth, though sometimes as long.
This form was sent from California hy Coulter.
23. O. p silo ca rp u n i, James. Plants minute, cespitulose,
blackish green; stems about 5 m.m. long: lower leave.s gradui[
;!