BRYACEJE. 



83 



brane large; segments perf ect, witli 2 or 3 

 appeiidicLilate 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, gi'eenish white. Capsule very 

 long-necked, recurved. 



Plants and leaves large. Upper leaves rosu- 

 late; areolation very large, round-hexagonal. 



Teeth of the peristome short, adhering to a 

 long cupuliforin reticulated inner mem- 

 brane pierced at top by the columella. 



Leaves long, solid. Capsule obconical, cer- 

 nuous, enlarged at the orifice. Peristome 

 double, perfect. 



Capsule erect, cylindrical-oblong. Teeth long; 

 membrane short, entire or divided into seg- 

 ments; cilia none. 



Plants radiculose-tomentose. Leaves densely 

 areolate. Capsule oblong, cernuous. Peri- 

 stome of 3fntuiii. {Suhtribe Aulacomnie-^. ) 



Leaves subequal; areolation round-hexagonal, 

 papillose in the upper part. Capsule oblong, 

 horizcntal, obscurely striate. Peristome 

 double; outer teeth connate at base; inner 

 membrane divided into nodose filiform ap- 

 pendiculate segments or cilia united in 

 fours. (Subtribe Timmie^.) 



85. Brynm, proper. 

 Subgen. Pty choslomum. 



Subgen. Cladodium. 



Subgen. Bhodobryum. 



86. Zieria. 



87. Mnium. 



88. Cinclidiuni. 



89. Rhizogonium. 



90. Leptotheca. 



91. AulacomniurQ. 



92. Timmia. 



Tribe XIV. POLYTRICHE^. Plants woody, 

 late inside. Peristome simple, of 32 or 64 

 adhering to the membranous enlarged top of 



Leaves not sheathing at base. Calyptra cu- 

 cullate, spinulose at the apex only. Peri- 

 stome of 32 teeth. 



Leaves subtubulose at apex. Calyptra large, 

 sparsely hairy. Capsule thin. Teeth ir- 

 regular. 



Calyptra very narrow, smooth. Capsule oval- 

 globose, incurved and laterally compressed. 



Leaves thick, clasping at base; lamelljB cover- 

 ing the whole lamina. Capsule cylindrical- 



Leaves thick, lamel- 

 solid linguiform teeth, 

 the columella. 



93. Atrichum. 



94. 



95. 



oblong. 



Plants large. Capsule quadrate or hexagonal 

 on a short subglobose apophysis. Teeth 64. 



96. 



97. 



Oligotrichum. 

 Psilopilum. 



Pogonatum. 

 Polytrichum. 



Tribe XV. BUXBAUMIE^. 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. Buxbaumia. 



