: r
branchlets more or less distinct, sometimes secund, minutely
serrate all around, narrowly costate to above the middle, concave
at the angles ; areolation very close and narrow, the alar
yellow ; perichætial leaves sheathing at base, abruptly narrowed
into a long slender recurved flexuous point, the inner only
thinly costate : capsule cernuous or subhorizontal by the curving
of the pedicel, oval-oblong ; operculum short-rostrate ; cilia
shorter than the segments; ammlus large. — Spec. PI. 1130.
Isothecium myosuroides, Brid. Bi-yol. Univ. ii. 369 ; Bryol. Eur.
t. 534. Eurhynchium myosuroides, Schimp. Syn. 549.
Hab. On trees; Nova Scotia (James); White Mountains (Oakes);
California (Bolander, Watson); Oregon (Ilall).
63. H. Stoloniferum, Hook. Ramification as in the last,
the plants generally larger ; branch-leaves more crowded, densely
imbricate when dry, more elliptical, minutely papillose on the
back, costate beyond the middle, more distinctly serrate : capsule
drooping; cilia as long as the segments. — Muse. Exot.
t. 74 ; Mitt. Journ. Linn. Soc. viii. 34; Lesq. Mem. Calif. Acad,
i. 31 ; Sulliv. & Lesq. Muse. Bor.-Am. Exsicc. (ed. 2), n. 425.
Isothecium stoloniferum, Brid. 1. c. 371. II. myosuroides, var.
stoloniferum, Muell. Syn. ii. 500.
H a b . Common on trees upon the Pacific Coast, from California to
Alaska (Port Colville, Watson), and very variable. The species varies
even upon the same tuft, according to degree of exposure to fog aud wind.
The characters of the next five species cannot be considered permanent.
64. H. spiculiferum. Mitt. Leaves (below the perichætium)
lanceolate-acuminate from a cordate-ovate base,
smooth, nerved for three-fourths of the length, the borders
reflexed below, serrulate above ; upper leaves narrower, papillose
on the back, those of the branchlets elliptical-lanceolate,
very acute, concave, acutely papillose on the back, the costa
denticulate at the apex, and the borders plane and serrulate;
perichætial leaves erect, ohlong at base, serrulate, recurved
above, costate to above the middle: capsule short-pedicelled,
oblong, subsymmetrical, horizontal; operculum conical; segments
cleft between the articulations; cilia solitary. — Journ.
Linn. Soc. viii. 34.
H a e . British Columbia (Lyall, Douglas).
Habit of H. myosuroides, with the branchlets more attenuated and
more curved, and the whole plant a little larger. It appears to differ from
H. stoloniferum iu its more slender habit, more abundant papillæ on the
branch-leaves, the reflexed margins of the stem-leaves, the more strongly
one-nerved perichætial leaves, and the solitary cilia. — (Mitten).
65. H. a c u tic u sp is , Mitt. 1. c. Leaves loosely imbrioate;
those below the periohætium cordate-ovate, narrowly long-
acuminate, minutely serrulate on the borders, nearly smooth at
the cuspidate apex, with a very short diffused oosta, forking or
entire, vanisliing in the middle ; cells of the basal angles obscured
or dusky ; leaves of the branchlets elliptical-ovate, acute, serrulate,
nerved to the middle, smooth on the back; the perichætial
subulate from an oblong ecostate base, recurved, very
entire : capsule on a short pedicel, oval, inclined ; lid conical ;
cilia two, shorter.
H a e . British Columbia (Douglas).
Mitten, who iiad seen only two stems of this moss, says that it may he
H. Brewerianum, Lesq., hut that the description of that species is not
sufficiently complete to he quite certain.
66. H. B rew erian um , Lesq. In compact dark green or
yellowish green tufts ; stems creeping, simple at base, radiculose,
fasciculately branching above ; branches simple, erect, or
suhcurved, julaceous when dry, narrowed toward the base or
inflated in the middle : leaves imbricate, appressed when dry,
open when damp, those of the stem distant, broadly ovate-
lanoeolate, long-acuminate, serrulate at the apex, the costa disappearing
in the middle; branch-leaves shorter and broader,
broadly ovate-lanoeolate, short-acuminate, sharply serrulate
above, costate to above the middle ; areolation at base ovate,
oblique and irregular, oval in the middle, broader and rhom-
boidal-obtuse toward the apex, subpapillose: capsule erect,
cylindrical-ovate, turgid below, constricted under the orifice ;
operculum conical-rostellate or conical-acute ; cilia two, robust,
equal to the segments. — Trans. Amer. Phil. Soc. xiii. 12.
Var. lu te sc e n s. Pale dirty yellow; branches longer, stoloniferous:
perichætial leaves shorter, acuminate, serrulate ;
areolation shorter and broader : capsule longer, subcernuous ;
cilia slender.
H a b . Granite rocks near Mission Dolores (Bolander); Monterey
(Watson); Sierra Nevada (Brewer).
The color of the plants, due to exposure to the sun, the compact tufts,
the branches nearly simple, rarely attenuated or stoloniferous, terete or
julaceous by the imbrication of the leaves, the capsule somewhat longer
and generally erect, are the essential characters separating this species
from H. stoloniferum.
il