1. O. flexuosus, Brid. Tufts flattened, rigid, bright green
above, reddish tomentose below: leaves crowded, open or
turned to one side, solid, lanceolate-subulate, serrulate at the
apex, deeply excavated at the angles; costa smooth on the
back: capsule oblong-ovate or elliptical, costate when 'dry; annulus
large, simple.'—Bryol. Univ. 1.469; Bryol. Eur. t. 89,
Braithw. Brit. Moss-Fl. 1. 132, t. 18, P.
Hab. Shaded rocks, on Grandfather Mountain, North Carolina {Sullivant);
sterile.
2. C. Talltllensis, Sulliv. & Lesq. Tufts yellowish white,
glossy outside, brown within; stems simple or dichotomous,
sparingly radiculose toward the base: leaves open-erect, close,
narrowly lanceolate from a somewhat decurrent not excavated
base, concave, serrate at the apex; costa percurrent; basal cells
very large, broadly quadrangular, inflated, light brown.—
Muse. Bor.-Amer. n. IS"; Sulliv. Icon. Muse. 27, t. 17.
H ab. Wet flat rocks, on the river-banks at Tallulah Falls, Georgia.
Compared -svith the last, it clearly differs in the pale yellowish green
color, the exactly linear leaves sub-decurrent and not excavated at the
angles, -with larger inflated basilar cells, and the costa not entirely fllling
the leaves at the apex, but bordered by a band of the lamina.
3. 0 . in tro flex u s, Brldel. Plants yellowish green above,
brown below; stems short, erect: leaves appressed, erect-open,
narrowly lanceolate, canaliculate above, constricted into a long
hyaline denticulate hair-point straight or geniculate at base
when dry; costa broad, three-fifths of the width of the leaves
at base, lamellate on the back; basal cells large, orange-colored,
the medial longer, narrower, rectangular and hyaline. — Bryol.
Univ. 1. 472 ; Braithw. 1. c. 135,1.19, C. Dicranum introjlexum,
Hedw. Spec. Muse. 147, t. 29. C. leucotrichus, Sulliv. & Lesq.
Muse. Bor.-Amer. Exsicc. n. 73 ; Sulliv. Mosses of U. States, 19,
and Icon. Muse. 28, t. 17.
Hab. Dry sandy rocks, Raccoon Mountains, Alabama {Lesquereux).
4. 0 . L e a n u s, Sulliv. Plants more or less densely cespitose,
short, straw-color, tawny below; stems radiculose to the apex,
branching by slender capitate fasciculate innovations: leaves
crowded, open-erect, rarely subsecund, linear-lanceolate, subulate,
not decurrent at base; costa broad, flat; areolation linear-
oblong, the cells only slightly larger toward the base, not
enlarged at the angles; abortive leaves forming compact tufts
of linear thickish fleshy filaments like a deformity produced by
insects. —Mosses of U. States, 19, and Icon. Muse. 29, t. 18.
Syrrhopodon Leanus, Sulliv. Muso. Allegh. n. 172.
H a b . On much decayed logs or soft woody earth iu forest swamps of
the Middle States and westward; not common.
5. 0 . Hallii, Lesq. Plants in compact pale green glossy
tufts ; stems short, 2 c.m. long, many times dichotomous, tomentose
to the apex : leaves strict, rigid, linear-lanceolate, tubulose,
very entire at the apex, and smooth throughout; costa very
broad, covering the whole lamina except two small auricles at
base composed of a few colored inflated cells. — Porter Æ Coult.
Plora of Colorado, 155.
H a b . High ridges of the Colorado Mountains [F. Hall).
Resembling C. brevipes (Schimp. Bryol. Eur. Suppl. Campylopus, t. 2),
but differing in the broader costa, and the leaves constricted at base into
short obtuse auricles with one or two rows of colored cells.
6. C. frig id u s, Lesq. 1. c. Resembles the preceding species
in the broad dilated costa, but differs in the longer narrower
leaves, slightly denticulate at the apex, open, flexuous when dry,
and scabrous on the back ; alar cells round.
H a b . Same as the last {E. Hall).
7. 0 . su b leu co g a ste r. Plants loosely cespitulose, dirty
yellow ; stems short, slender, simple in the lower part, divided
at the apex into short capitate branchlets composing a críspate
bristly tuft : lower leaves minute, erect, the comal longer, ovate-
acuminate with a flat broad nerve passing up to a gradually
narrowed canaliculate subulate strict point, serrulate at the
apex ; basilar cells large, pellucid, regularly hexagonal, with a
few smaller quadrate inflated yellowish ones underneath, the
alar numerous, very loose, brownish-colored, pellucid, slightly
excavated ; perichætial leaves much larger, sheathing or convolute
at base, loosely reticulate, with a long-flexuous more
coarsely subulate point. — Dicranum suUeucogaster, Muell.
Bull. Torr. Club, v. 50.
H a b . On wet clayey ground; Mobile, Alabama (Mohr).
This species differs from the European Dicranum leucogaster, Muell.,
in the more flexuous thicker longer hairy stems, the alar cells whitish and
loose, and the others smaller.
8. 0 . Donnellii. Differs from the last in its tawny green
color, the leaves more open, subfalcate, longer and more abruptly
narrowed, often spinulose-serrate and whitish at the apex, the
costa narrower, etc. — Dicranum Donnellii, Aust., Coult. Bot.