28 
V. Trematodontec. Capsule curved; teeeth cleft 
or entire. Leaves not mamillose; alar cells not defined. — 
Differs from other Dicranacee in the long neck z the a 
capsule. E 
87. Trematodon. Leaves mostly narrow. 
VL Ditrichece. Capsule generally straight; teeth 
partite with subfiliform legs. Leaves not mamillose, narrow; 
cells narrow, the alar seldom distinct. 
88. Ditrichum. Capsule usually not sulcate when $ 
dry. Habit of Dicranella. e 
VIL Cynodontiece. Capsule oblique or straight; - 
teeth cleft (in Cynodontium schisti mostly entire). Leaves — 
mamillose, mostly recurved, denticulate; upper cells sub- - 
quadrate; alar cells generally not well-defined ; costa narrow, 
not excurrent. Calyptra not fimbriate. _ 4 
89. Cynodontium. Leaves not sheathing. Capsule 
mostly sulcate. e 
90. Dichodontium. Leaves sheathing. Capsule not E. 
sulcate. 3 
Vill. Dicranee. Capsule curved or straight; teeth — 
cleft or (in few species) partite with subulate legs. Leaves 4 
generally not mamillose and not recurved, denticulate or  - 
entire; alar cells (exc. some species of Campylopus) 
well-defined. Leaves generally setiform and somewhat | 
rigid, sometimes crisped when dry. Plants mostly robust. 
91. Dicranum. Calyptra not fimbriate. Leaves 
without hairpoint; alar cells distinct; costa mostly narrow, 
not often long-excurrent. Pedicel of the capsule ( exc. 2- 
species) straight. 
92. Campylopus. Calyptra fimbriate at base. Leaves 
sometimes with hairpoint; alar cells sometimes not defined; 
costa mostly very broad and long-excurrent. Pedicel of - 
the capsule arcuate or flexuous. Not often fruiting. | ^ 
IX. Dicranellec. Capsule curved or straight; teeth 
cleft or entire. Leaves not mamillose, sometimes recur- 
ved, denticulate or entire; - cells not often. distinet 
