Capsule cernuous, or erect at base, curved
above. Peristome of 16 teeth curved to the
right, with an internal membrane rudimentary
or divided into segments. 74. P u n a r ia .
Tribe XI. BARTRAMIEAl. Leaves papillose on both faces; areolation
minute, quadrate in the upper part of the leaves. Capsule nearly
spherical, cernuous, ribbed when dry. Peristome none, simple or
double.
Stems erect, tomentose, with dichotomous
branches. Teeth of the peristome, when
formed, attached to the basilar membrane
above the orifice.
Plants small. Leaves 5-ranked, imbricate.
Teeth of the peristome connivent in a cone.
Plants long, branching in dichotomous innovations
and fasciculate branchlets.
75. Bartramia.
76. Conostomum.
77. Philonotis. '
Tribe XII. MEESIEAl. Leaves 8-8-ranked. Capsule long-pedicellate
and long-necked, cernuous. Peristome double; outer teeth much
shorter than the 16 segments of the carinate membrane, absent in
Catoscopium.
Capsule very small, globose, thick, black.
Teeth of the peristome short.
Leaves thin, remote, very loosely areolate,
pellucid.
Areolation of the leaves small, rectangular,
chlorophyllose.
Stems nearly simple. Leaves abruptly reflexed
from the middle. Peristome of
Webera.
78. Catoscopium.
79. Amblyodon.
80. Meesia.
81. Paludella.
Tribe XIII. BRYEÆ. Plants of various size. Leaves simply costate,
generally dentate ; areolation equal, smooth. Capsule globose, ovate
or pyriform, cernuous, horizontal or pendent, very rarely erect.
Peristome generally double; teeth transversely barred; inner membrane
divided into segments alternating with the teeth, generally
separated by cilia.
Peristome simple. Teeth narrowly linear,
with nodose articulation.
Leaves narrow, subulate. Capsule longnecked.
Peristome double. Cilia appendiculate.
Leaves lanceolate, glossy, thinly costate: areolation
narrow, linear-hexagonal. Capsule
short-necked. Inner membrane broad ; cilia
smooth.
Capsule thinner, long-necked, horizontal.
Inner membrane narrow: segments entire;
cilia none or very short.
Cellules of the areolation rhombic-hexagonal,
loose, solid. Capsule pyriform, mostly regular.
Teeth of the peristome lobed; segments
adhering to the peristome or free;
cilia fragmentary, or 2 or 3, generally appendiculate.
— Inner peristome free ; mem-
82. Mieliohhoferia.
83. Leptobryum.
84. Webera, proper
Subgen. Pohlia.
brane large; segments perfect, with 2 or 3
appendiculate cilia.
Cilia and segments adhering to the teeth.
Cilia and segments free; cilia more or less
perfect.
Plants large. Comal leaves rosulate.
Flowers dioecious, discoid.
Leaves soft, greenish white. Capsule very
long-necked, recurved.
Plants and leaves large. Upper leaves rosulate
; areolation very large, round-hexagonal.
Teeth of the peristome short, adhering to a
long cnpuliform reticulated inner membrane
pierced at top by the columella.
Leaves long, solid. Capsule obconical, cernuous,'
enlarged at tlie orifice. Peristome
double, perfect.
Capsule erect, cylindrical-oblong. Teeth long;
membrane short, entire or divided into segments;
cilia none.
Plants radieulose-tomentose. Leaves densely
areolate. Capsule oblong, cernuous. Peristome
oiMnium. ( Subtribe Aueacomnieìe. )
Leaves subequal ; areolation roimd-liexagonal,
papillose in the upper part. Capsule oblong,
horizontal, obscurely striate. Peristome
double; outer teeth connate at base; inner
membrane divided into nodose flliform appendiculate
segments or cilia united in
fours. (Su6íi-í6e TiMMiEiE.)
T r i b e XIV. POLYTRICIIEAl. Plants woody. Leaves thick, lamellate
inside. Peristome simple, of 32 or 64 solid linguiform teeth,
adhering to the membranous enlarged top of the columella.
Leaves not sheathing at base. Calyptra cucullate,
spinulose at the apex only. Peristome
of 32 teeth.
Leaves subtubulose at apex. Calyptra large,
sparsely hairy. Capsule thin. Teeth irregular.
Calyptra very narrow, smooth. Capsule oval-
globose, incurved and laterally compressed.
Leaves thick, clasping at base; lamellse covering
the whole lamina. Capsule cylindrical-
oblong.
Plants large. Capsule quadrate or hexagonal
on a short subglobose apophysis. Teeth 64.
85. B r y u m , proper.
Subgen. Pty chostomum.
Subgen. Cladodium.
Subgen. Phodobryum.
86. Zieria.
87. Mnium.
88. Cinclidium.
89. Rhizogonium.
90. Leptotheca.
91. Aulacomnium.
92. Timmia.
93. Atrichum.
94. Oligotrichum.
95. Psilopilum.
£6. Pogonatum.
97. Polytrichum.
T r i b e XV. BUXBAUMIEriS. Stemless plants with large oblique
ventricose capsules. Peristome double, the outer rudimentary, the
inner membranous, twisted into a 16-32-plicate truncate cone.
Basilar leaves Ungulate. Capsule yellowish
green, gibbous-ovate. 98. Diphiscium.
Leaves dentate-ciliate, not costate. Capsule
solid, blackish. 99. Buxhaumia.