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BRYACEÆ. [Campylopus.
Gaz. iv. 150. Dicranum subleucogaster, Aust. Musc. Appal.
E.xsicc. Suppl. 1, n. 470.
Hab. Southern Florida; common.
9. C. Virginicus. Plants widely cespitose, tawny green ;
stems short, flexuous, slender, nearly equally foliate: leaves
strict, erect-open, abruptly long setaceous-subulate from a sub-
quadratc-ovate base, canaliculate, minutely serrate on the margins;
costa broad, striate, scabrous on the back or subserrate
at the apex ; cells of the areolation oblong and oval, hyaline,
rhoniboidal-oblong or linear toward the middle, smaller above,
the basal much enlarged ; some of the apical leaves brittle,
truncate from a narrower base, deciduous, more convolute, longer
and gradually acuminate, entire and smooth on the back, with
cells shorter, hyaline, the basilar scarcely different and the costa
not distinct from the lamina. — Dicranum Virginicum, Aust.,
Coult. Bot. Gaz. iv. 150.
Hab. Biackwater Falls, West Virginia {J. Donnell Smith).
From the remarks of the author, the slender stems are about 2 m.m.
long, the young ones clothed with a delicate entangled white tomentum.
About one-half of the expanded portion of the leaves is composed of large
hyaline cells; ascending along the costa, these gradually beoorae chlorophyllose
and smaller, while toward the margin they become much narrower
and longer; the basal cells although much enlarged are not inflated,
and there appear to be no true alar cells; the lamina rarely extends to the
middle of the subulate portion of the leaf.
10. 0 . g ra c ilic au lis, Mitt. Stems slender, 1 or 2 c. m. long,
simple and radiculose in the lower part : lower leaves closely
appressed, the upper tufted, longer, spreading, narrowly lanceolate
acuminate from an elliptical base ; costa covering a third
part of the lamina and distinct to near the apex ; borders incurved,
slightly denticulate above; lower cells loose, oblong,
pellucid, gradually shorter, rhomhoidal above ; inner perichætial
leaves long, convolute at base, abruptly narrowed into a
narrow subulate hyaline-denticulate point : capsule immersed in
the comal leaves, oval, equal, scabrous at base; calyptra fimbriate.—
Journ. Linn. Soc. xii. 83.
Hab. South Florida {Austin).
11. 0 . a n g u s tire tis . Very like the preceding species in
aspect, differing in the lower leaves less appressed, the cells
much longer, siiblinear, the alar dirty red, much contracted. —
Dicranum angustiretis, Aust., Coult. Bot. Gaz. iv. 150.
H ab. With the preceding species and probably a variety of it.
Fissidens. ] BRYACEÆ. 81
SuBTEiBB I. — FISSIDENTEÆ.
Stems frondiform. Leaves distichous, conduplieate below,
alate on the hack, the upper part expanded into a vertical simple
lamina with a percurrent or excurrent costa ; areolation small,
chlorophyllose. Oiierculum and peristome as in Dicranum.
2 5 . FISSIDENS, Hedw. (PL 1.)
Plants simple or sparingly branched. Flowers gemmiforrn,
terminal or axillary. Calyptra cucullate or mitriform. Capsule
cernuous or erect. Teeth of the peristome horizontally incurved
when dry. Annulus narrow. Spores small, smooth. —
Skitophyllum, La Pyl.
* Monoecious. Fruit and flowers terminal, or rarely lateral,
■y- Plants less than one c. m. long.
1. F. Closteri, Aust. Plants gregarious, very minute or
stemless : male flowers attached to the base : leaves perichætial,
the lower very small, broadly ovate-lanceolate, acuminate, the
upper at least twice as large, the lanceolate lamina about equal
to the ovate-plicate base ; costa ending below the apex ; areolation
qnadrate-oblong, equal : capsule oblong-ovate, on a thick
pedicel ; lid with a long conical beak, entirely covered by the
calyptra; teeth long, reflexed ; annulus indistinct. — Bull. Torr.
Club, V. 21 ; Sulliv. Icon. Muse. Suppl. 44, t. 29.
r iA B . On the ground, near Closter, N.J. {Austin).
Smaller than F. exilis, its nearest congener, and distinguished by its
shorter leaves, the blade almost obsolete.
2. F. b ry o id e s, Hedw. Plants small, gregarious ; leaves
with a lingulate-lanceolate lamina, bordered all around by a
pale rounded margin either connivent at the apex with the
shortly excurrent costa, or ending below the minutely serrate
apex ; perigonial leaves broad-ovate at base, erose on the borders
below the abruptly narrowed short apical lamina: male flowers
in numerous axillary pedicellate buds : capsule erect, oblong-
ovate ; annulus very narrow, indistinct. —Muse. Frond, iii. 67,
t. 29, excluding fig. 10 ; Bryol. Eur. t. 101 ;' Braithw. Brit.
Moss-Fl. i. 71, t. 10, E.