16 



9. Clasmatodon. Lid of the capsule rostellate; 

 teeth irregular and narrow, generally without longitudinal 

 line, sometimes split below. Leaves sometimes denticulate 

 above; costa simple. Monoecious. 



10. Habrodon. Lid of the capsule conic, not ro- 

 stellate; teeth with longitudinal line. Leaves entire, nerve- 

 less. Dioecious. 



B. Peristome double. Leaves somewhat large. 



11. Anacamptodon. Lid of the capsule rostellate; 

 teeth united in pairs (as in Orthotrichum), with longi- 

 tudinal line; annulus none; pedicel long. Leaves entire; 

 ■costa simple. Monoecious. 



Fam. 4. Bndotrichacese (new fam.) 



12. Pterobryum. Leaves nearly entire; inner cells 

 sublinear; costa long and simple. 



Fam. 5. Neckeraceee. 



13. Neckera. Capsule sometimes immersed; cilia 

 wanting. Leaves not truncate above, often undulate ; costa 

 mostly short and double. Stem usually pinnate, often 

 with flagellate branches, sometimes with paraphyllia. Mostly 

 dioecious. 



14. Neckei'opsis. Capsule immersed. Leaves trun- 

 cate, sometimes undulate; costa simple. Stem irregularly 

 branching without flagellse and paraphyllia. Synoecious. 

 Calyptra sometimes mitriform. 



15. Porotrichum. Capsule exserted; cilia appen- 

 diculate. Leaves neither truncate nor undulate: costa 

 simple. Stem subpiunate with paraphyllia. Dioecious. 



Fam. 6. Leptodontaceee (new fam.) 



16. Leptodon. Capsule scarcely exserted. Leaves 

 not limbate. Branches (secondary stems) involute-circinnate 

 when dry; paraphyllia present. 



17. Macouniella (new genus). Capsule distinctlf 

 exserted. Leaves Hmbate to the acumen by round-quadrate 

 cells. Branches not circinnate; paraphyUia wanting. 



