ta ry : capsule oblong or subcylindrical, incurved, striate, deeply
furrowed and constricted under the orifice when d ry ; annulus
double. —Muse. Frond, ii. 82, t. 30 ; Bryol. Eur. t. 81; Braithw.
1. c. 161, t. 22, A. D. pallidum, Bruch & Schimp. Bryol. Eur.
1. (Dicranum) 39.
Var. co n d en sa tum . Stems short, densely tufted: leaves
shorter, broader, rigid, very close, open when dry. — 7>. condensatum,
Hedw. Spec. Muse. 139, t. 34. I), spurium, van,
Sulliv. & Lesq. Muse. Bor.-Am. Exsicc. n. GS**.
Hab. Shaded sandy ground; the variety in dry sandy places or hills, especially
in southern districts; not rare.
22. D. Drummondi, Muell. Plants closely and widely
cespitose, bright green above; stems robust: lower leaves
spreading or recurved, the upper secund or falcate, twisted at
the apex when dry, oblong, concave in the lower part, lanceo-
late-stibulate, convolute or canaliculate, denticulate above; costa
broad, vanishing with or below the apex, denticulate or papillose
in the upper p a rt; cells of the areolation oval-oblong, very
small toward tiie apex, oblong or broadly linear in the middle,
abruptly much enlarged below, round-quadrate, reddish brown,
filling the whole tumescent suhauriculate base: capsules aggregated,
short-pedicellate, cylindrical-oblong, incurved, slightly
inflated at base, deeply furrowed and constricted under the
orifice when dry; teeth distantly articulate, split to near the
base, regular; annulus large, simple. ■— Syn. Muse. 1. 356, in
part; Sulliv. Mosses of TJ. States, 23, and Icon. Muse. Suppl.
48, t. 83 ; Sulliv. & Lesq. Muse. Bor.-Am. Exsicc. (ed. 2), n. 88;
Lindb. Adnot. Bryol. in Bot. Notis. 1865, 78 and 79.
Hae . Shade of pine woods, New Jersey; subalpine regions of New
York and New England; eastern slope of the Rocky Mountains; not rare.
23. D. u n d u la tum . Turn. Plants in loose wide disjointed
tufts; stems thick, very tomentose: leaves spreading-subsquar-
rose, the terminal involute or secund, pale green, ohlong-ovate
toward the decurrent base, linear-lanceolate, very nndulate
above, sharply denticulate; costa narrow, bilamellate on the
back and serrate; areolation pale, loose, enlarged at base: fruits
clustered: capsule long-cylindrical, arcuate, obscurely striate;
lid with a very long subulate beak; annulus narrow. — Muse.
Hib. 59; Bryol. Eur. t. 82, 83.
Ha b . Shaded swampy ground; plains and mountains; common.
2 3 . DICRANODONTIUM, Bruch & Schimp. (PI. 1.)
Plants densely cespitose : stems slender, tomentose, dichotomous
or fastigiately branching. Leaves spreading or falcatc-
seound, rigid, long-setaceous subulate from a lanceolate base,
glossy; costa enlarged, filling the whole narrow part of the
leaf; hasil.ar areolation rectangular, hyaline, enlarged and
brown-colored at the angles. Flowers dioeoious. Calyptra
large, cucullate, entire at base. Capsule oblong or cylindrical,
soft, not striate or plicate when dry, erect on a long floxuous-
arched pedicel. Lid convex at base with a long aoicular beak.
Peristome attached deep below the orifice of the capsule, of 16
narrow teeth cleft to near the base into two linear unequal
segments, distantly articulate, striolate to the apex, connivent
at apex when moistened, open when dry. Annulus none.
1. D. lo n g iro stre , Bruch & Schimp. Tufts soft, yellowish
green above the thick reddish brown tomentum : leaves easily
detached, slightly sheathing at base, serrate or entire at the
apex, smooth on the back ; alar cells inflated, hyaline or reddish,
filling the whole base on both sides of the costa. — Bryol. Eur.
t. 88. Didymodon longirostrum, Web. & Mohr, Tasch. 155.
H a e . On sandstone rocks; Alleghany Mountains [Sullivant] [Southern.
Ohio [Lesquereux), sterile.
2 4 . OAMPYLOPUS, Brid. (PI. 1.)
Aspect of Dicranum. Leaves broadly costate; areolation
enlarged, hyaline, brown-tinted at the often excavated angles ;
costa sulcate or smooth on the back. Flowers dioecious. Calyptra
cucullate, ciliate at base. Capsule symmetrical, solid,
generally striate. Lid subulate-beaked. Peristome as iu
Dicranum. Annulus large, simple or compound.
As the peristome, ciliate calyptra, and thick texture of the annulated
capsule are the essential characters which separate this genus from the
last, and as the plants are generally found sterile, it is often difficult to
determine their reference to Dicranodontium or to Campylopus. As also
the characters of the leaves of both genera are variable, the AiuCTlcan species,
all described from sterile specimens, are subject to criticism. The
descriptions, however, are made upon good and generally numerous
specimens.