larged base, acute, the costa projecting on the upper face; capsule
on a very long subflexuous pedicel, oval-globose or exactly
spherical, ohlong, curved and closely furrowed when dry ; teeth
shorter, more distantly articulate, and the cilia nearly half as
long as the segments. — Coroll. 86. Bartramia calcarea, Bruch
& Schimp. Bryol. Eur. t. 325 ; Muell. Syn. i. 475.
Hab. Calcareous springs, hills and mountains; rare. Wliite Mountains
(Oakes) ; Humboldt Mountains, Nevada, and in the Uintas ( Watson).
The habitat of tliis species in North America is still uncertain. The
specimens that were determined and distributed under this name in SuUiv.
& Lesq. Muse. Bor.-Amer. Exsicc. (ed. 2), n. 250, have been considered
hy Schimper as a marked variety of P. fontana, or as an intermediate
form.
5. P. Mohriana . Dioecious : the stems short and stout,
densely foliate, radiculose below ; branches thick, unequal, generally
short, strict : stem-leaves also very strict, open in a dry
or humid state, dirty yellow, broadly and exactly lanceolate,
long-acuminate, indistinctly plicate lengthwise, irregularly concave
at base ; borders narrowly revolute, densely serrulate-
denticulate at the apex, nodulose in the lower part by project-
ing papillæ; costa deeply canaliculate, excurrent into an awnlike
point ; cells of the areolation long, narrow, linear-punctate,
papillose ; perichætial leaves similar, broader at base, loosely
reticulate : capsule on a flexnous stout red pedicel as long as
the stem, slightly oblique, larger, globose, plicate ; lid minute,
umhonate ; peristome double, normal. — Bartramia Moliriana,
Muell., Regensb. Flora, Ivi. 482 (1873).
H a b . Decayed trunks in deep woods; Louisiana (Mohr).
Differing from P. fontana and P. calcarea in its short stature, and the
leaves very strict, lanceolate, loosely reticulate and very papillose. Dr.
Mohr remarks In a letter that the species is very near P. Schlwnbergeri,
a Mexican species, and that he is in doubt of its being North American,
having failed to find it again in Louisiana.
T ribe XII. MEESIEÆ.
Plants varying in size, simple or branching by innovations,
radieulose-tomentose. Leaves 3-8-ranked, lanceolate or linear-
oblong. Calyptra fugacious. Capsule long-pedicellate and
long-neoked. Lid small, convex or conical. Peristome double;
teeth of the outer much shorter than the carinate-plicate inner
membrane (absent in Catoscopium), which is divided into 16
segments, sometimes partly cohering by the lacerate borders;
cilia none or rudimentary.
78. CATOSCOPIUM, Brid.
Plants slender. Leaves open, erect, lanceolate, acutely acuminate
with a strong percurrent costa; perichætial leaves
longer, half-sheathing to the middle ; areolation small, quadrate
oblong or rectangular, opaque. Flowers dioecious, the
male gemmiforrn. Calyptra long, narrowly cucullate. Capsule
small, globose, thick, dark brown, black when old, polished,
narrowed hy its short collum to the twisted pedicel (1 or 2 c.m.
long). Lid short, conical, obtuse. Peristome simple ; teeth
short, irregular, punctulate. Annulus none.
1. C. n ig ritum , Brid. The only species, with the characters
of the genus. — Bryol. Univ. i. 868, t. 4 ; Bryol. Eur.
t. 313. Weisia nigrita, Hedw. Muse. Frond, iii. 97, t. 39.
H a e . Lake Superior, in boggy meadows (Agassiz); Lake Huron,
Ontario (Macoun).
A very rare species in North America, easily known by its small globose
blackish capsules, resembling pinheads. The genus, though abnormal in
its characters, is more nearly related to the Meesiem than to any other
group of mosses.
79. AMBLYODON, Beauv.
Plants short. Leaves remote, few, the upper tufted, all thin,
soft, very loosely areolate. Flowers bisexual and unisexual on
the same plants, the male with few or no archegonia. Capsnle
thin, stomatose. Lid narrowly conical. Teeth half as long as
the narrow segments ; cilia none.
1. A. d e a lb a tu s , Beauv. Leaves oblong-ovate and lingulate
lanceolate, the comal only minutely serrate toward the
acuminate apex, whitish when old, twisted when dry; costa
dirty brown, vanishing below the apex: capsule soft, long-
pyriform, turgid and attenuated to a long neck, which is
abruptly narrowed to a long fleshy pedicel, twisted to the left
when dry: spores large. — Prodr. 41; Bryol. Eur. t. 307.
Bryum dealhatum, Dicks. Crypt. Fasc. ii. 8, t. 5. Meesia