27 



teeth sometimes (in T. splachnoides) partite, mostly de- 

 flexed when dry. Leaves acuminate, serrate above. Spores 

 small. Monoecious. 



II. Oedipodiece. Peristome wanting. Leaves opake. 

 Pedicel of the capsule confluent with the neck. 



82. Oedipodium. Pedicel and neck of the capsule 

 tubular, whitish green, not rigid. Leaves obtuse and entire, 

 with long cilia at base ; costa broad. Sometimes synoecious. 



Fam. 21. Dioranacese. 



A. Peristomial teeth 8. 



I. Octoblepharece. Peristomial teeth entire, short 

 and pale yellowish. Capsule straight ; pedicel short. Leaves 

 whitish and rigid, not mamillose ; marginal cells numerous 

 at the base; costa very broad. 



83. Octoblepharum. Plants small. 



B. Peristomial teeth 16. Leaves whitish, nearly 

 filled by the costa; marginal cells obsolete. 



II. Leucobryece. Capsule curved; teeth bifid, long 

 and red; pedicel long. Leaves not mamillose, plurifarious. 



84. Leucobryum. Plants generally robust. 



C. Peristomial teeth ] 6. Leaves green, with distinct 

 cells on both sides of the costa. 



a. Leaves distichous. 



III. Distichiece. Capsule erect or inclined ; teeth cleft. 

 Leaves sheathing; lower cells narrow, the upper quadrate; 

 alar cells not defined. 



85. Distichium. Leaves long and narrow; costa 

 long-excurrent. 



b. Leaves plurifarious. 



aa. Leaf-cells dilated, the upper obliquely polygonal. 



IV. Aongstroemieoe. Capsule straight, very small; 

 teeth cleft. Leaves not mamillose, short and obtuse. 



86. Aongstroemia. Capsule ovoid, not striate. Plants 

 very small. 



bb. Leaf-cells narrow, at least the lower ones; the 

 upper rectangular, quadrate or suboblong-oval. 



