ill'
P 'i
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ceous on the inside, shorter than the inner peristome, to which
they are adlierent before becoming free by age, yellowish brown,
hygrosoopical ; the inner formed of a cnpuliform reticulate
membrane, pierced at the top by the point of the columella,
16-plioate and -carinate, the keels alternating with the outer
teeth, solid, orange-colored, persistent as carinate columnar
remnants between the teeth after the falling of the lid. Annulus
small, rudimentary, persistent. Spores veiy large, brown or
green.
1. C. s ty g ium , Swartz. Stem blackish tomentose, simple
or bearing few branchlets, rather distantly foliate r lower leaves
scattered, round-ovate, obtuse, the upper crowded into a rosulate
tuft, abruptly broadly ovate or ovate-oblong from the narrowed
base, apiculate ; borders opaque, cartilaginous ; costa dirty
green or blackish in old leaves, subpercurrent : capsule pendent,
oblong-pyriform with an inflated apophysis. — Schrad. Journ.
V. 27, t. 2 (1801). Mnium stygium, Bruch and Schimp. Bryol.
Eur; t. 385.
Ha e . Rocky Mountains (Drummond).
2. 0 . su b ro tu n d um , Lindb. Differing from C. stygium
especially in its smaller size and bisexual flowers; the leaves
rounded from a very short narrowed base, emárginate and
obtusely short-apiculate, with the nearly flat borders narrowly
margined by a double row of dark red cells, the costa vanishing
below the apex, the cells large, disposed in diverging rows,
irregularly rhomhoidal-oval, very slightly but uniformly thickened,,
ohlorophjdlose ; the capsule small, very thin, inclined or
subpendent, globose-oval, purj^le and narrowed at the orifice,
with a very short collum, the lid very highly convex and very
shortly apiculate, the teeth yellow, linear-lanceolate, muticous;
the spores green and slightly smaller. — Mniac. Eur. in Faun.
Flor. Fenn. ix. 72.
Hab. Greenland (Vahl) and Labrador (JBreutel), according to Lind-
berg.
8 9 . RHIZOGONIUM, Brid.
Stems simple, or rarely branching by innovations. Leaves
solid, rigid. Capsule obconical, cernuous, long-pedicellate.
Peristome double, perfect.
1. R. spiuiforme, Bruch. Synoecious: stems long, tomentose
below, erect, simple or divided in the middle ; branches of
equal length, curved, loosely foliate : stem-leaves fuscous, long-
lanceolate, douhly-serrate on the borders, coarsely serrate at
the apex; costa sharply serrate above, excurrent; perichætial
leaves broadly oval at the clasping base, abruptly acuminate ;
cells of the areolation round, small, somewhat obscure : capsule
inclined or horizontal, obconical, enlarged at the orifice, truncate ;
pedicel very long ; lid with a short curved beak. Regensb.
Flora, xxix. 134 (1846). 3Inium spiniforme, Muell. Syn.
i. 175.
Hab. Gulf shores, Alabama and Louisiana; in deep swamps at Spring
Hill, near Mobile (Mohr) ; not rare in Florida.
90. LEPTOTHECA, Schwaegr.
Leaves large, marginate. Calyptra dimidiate. Capsule
cylindric-oblong. Peristome double, the outer of 16 linear-
lanceolate erect teeth, the inner a thin membrane, short and
entire, or longer and cut into 16 segments, with or without
intermediate rudimentary cilia.
1. L. W rig h tii, Sulliv. Pseudo-monoecious : stems short,
simple, in dense tomentose tufts: leaves rosulate, spreading, the
comal ohlong-obovate or ohovate-spatulate, narrowly margined,
apiculate or cuspidate by the excurrent often recurved costa ;
borders recurved and serrulate above ; cells oval-hexagonal,
filled by the contracted utricle: calyptra dimidiate-subulate:
capsule erect, cylindrical, slender; lid conical, short-beaked;
teeth very long and narrow, minutely papillose, contracted at
the articulations ; inner membrane short, not passing above the
large compound annulus. Minute male buds, evidently fiom
the germination of spores, occur on various parts of the fertile
plants. — Proc. Amer. Acad. v. 281.
Hab. Enterprise, Florida (W. L. Foster, 1875).
SuBTKiBB I. AULACOMNIEÆ.
Plants radiculose. Leaves densely areolate, the cells small,
round or hexagonal-rectangular. Capsule ovate-ohlong, shortnecked.
Peristome of 3Inium.