Plants slender : leaves
N ■
Var. o rth o c a rp um , Schimp.
shorter, erect; capsule small, erect.
H a b . Bogs and damp rocks, in aipine and subalpine regions ; Mount
Marcy; White Mountains;. Northern shores of Lake Superior {Agassiz);
Eocky Mountains (Drummond); Vancouver Island (Macoun).
13. D. fuscescens, Turn. Plants loosely cespitose, variable
in size, slender or robust : leaves more or less tufted at the
tops of the innovations, secund or flexuous, pale green or tawny
yellow, slightly twisted in the upper part when dry, narrowly
lanceolate-suhulate, concave ; costa flat and broad ; cells of the
areolation minute, rounded-quadrate in the upper part of the
leaves, long and narrowly rectangular from the middle downward,
even to the base near the costa, enlarged, quadi-ate and
yellow at the angles; perichætial leaves sheathing, abruptly
short-subulate pointed: calyptra large, white: capsule ovate-
oblong, more or less turgid, inflated at the collum, striate, furrowed
when dry ; lid pale, long subulate-beaked ; teeth irregularly
split and perforated; annulus narrow.—^Musc. Hibern. 60,
t. 5. JD. congestum, Brid. Muse. Recent. Suppl. 1. 176; Bryol.
Eur. t. 77 ; Sulliv. Mosses of U. States, 22.
Var. lo n g iro stre , Schimp. Leaves narrower, críspate when
dry, subserrulate at the apex: capsule shorter, ovate, turgid,
distinctly striate ; lid with a longer slender beak. — I), longirostre,
Schwaegr.
Var. flexicaule, Schimp. Stems long, decumbent, geniculate
or flexuous, without radicles : leaves falcate secund : capsule
long-pedicellate. — D. flexicaule, Brid.
Var. an g u stifo lium , Schimp. Plants short, densely tufted :
leaves erect, narrow, blackish or dull green.
H a b . On rocks and decayed wood, very common in mountainous
regions and very variable. The above described varieties and some others
less marked have been observed in North America. The species is rare
in California. A variety with leaves papillose on the back has been sent
from the redwoods of that State by Bolander.
14. D. Muhlenbeckii, Bruch & Schimp. Plants densely
cespitose and tomentose, dark green, passing to black when
old; stems long, erect: leaves crowded, spreading, flexuous,
twisted-crispate when dry, lanceolate-subulate, concave or subtubulose
above, denticulate toward the apex, smooth on the
back, loosely areolate toward the base ; alar cells not inflated
nor enlarged, orange-colored ; inner perichætial leaves longtubulose,
abruptly short-subulate : capsule erect, cylindrical,
subarcuate, scarcely striate, on a long straw-colored pedicel ; lid
shorter than in the last species, oblique ; annulus narrow. —
Bryol. Eur. t. 78. Campylopus Pauei, Aust., Coult. Bot. Gaz.
1. 28.
Hab . Roots of trees in the Eocky Mountains (E. Hall); Santa Fe,
New Mexico (Fendler).
15. D. r h a b d o c a rp um , Sulliv. Closely allied to the preceding,
it differs in the plants being simple or rarely divided by
innovations, the leaves lanceolate or slightly subulate or linear-
lanceolate, acuminate, open-erect or subsecund, críspate when
dry, the inner perichætial leaves narrowed into a long thongshaped
point, the capsule narrower cylindrioal, erect, substru-
mose or inflated at the long collum, strongly striate especially
when drjq polished, the long straight-beaked lid, the teeth pale
red and more regular, the annulas large and subrevoluhle. —
Mem. Am. Acad. n. ser. iv. 172, t. 8.
Hab. Same as the last; Rocky Mountains (E. Hall, Downie); Mt.
Graham, Arizona (Bothrock); Santa Fe (Fendler).
16. D. fra g ilifo lium , Lindb. Plants densely cespitose ;
stems slender, erect : leaves erect, strict, brittle and generally
broken at the apex, lanceolate, gradually narrowed from the
base into a long setaceous point, very entire, glossy ; cells of
the areolation quadrate above, rectangular below, filled with
greenish yellow chlorophyll, pellucid and enlarged at the angles ;
perichætial leaves convolute, sheathing, constricted into a seta^
ceous point : capsule ovate, striate by dark lines to below the
orifice, furrowed when dry; lid with a subulate curved pale
beak; teeth entire to above the middle, bifid, not perforated
above ; annulus simple, revoluble. — Schimp. Syn. 89, and
Bryol. Eur. Suppl. Dicranum, 2, t. 2.
Ha b . Vancouver Island (Macoun, 1875).
17. D. SCOparium, Hedw. In loose yellowish, rarely green
tufts ; stems solid, generally long : leaves secund or falcate,
rarely erect, more or less tufted at the top of the innovations,
linear-subulate from a lanceolate base, sharply serrate and undulate
on the borders in the upper part ; costa compressed, furrowed
and denticulate on the back toward the apex ; areolation
rectangular in the upper part, narrower and vermicular tow’ard
the base, large, quadrate, orange-colored at the angles: male
.. J