18 



or double. Paraphyllia few. Endostomial segments often 

 rudimentary. Dioecious. 



26. Leskea. Leaves papillose ; cells rotundate-qua- 

 drate ; costa long. Paraphyllia numerous. Endostomial seg- 

 ments rimose. Monoecious. 



27. Lescurcea. Leaves smooth or (seldom) faintly 

 papillose; cells lanceolate-linear; costa long. Paraphyllia 

 not numerous. Endostomial segments entire, very narrow. 

 Dioecious. 



b. Stem without paraphyllia. Leaves smooth; middle 

 and upper cells dilated, suboblong or oval; costa mostly 

 simple. 



28. Myrinia. Pedicel of the capsule smooth. Leaves 

 entire. 



29. Helicodoniium. Pedicel of the capsule rough. 

 Leaves serrulate. 



Fam. 10. Batodontaceae (new fam.) 



I. ApierygiecB. All leaf-cells narrow, linear; costa 

 indistinct. 



30. Holmgrenia. Leaves entire, usually shining; 

 lower basal cells mostly orange-colored. Capsule annulate. 

 Stem irregularly divided or simple. Dioecious, rarely 

 fruiting. 



II. Entodontece. Alar leaf-cells subquadrate ; middle 

 cells generally narrow ; costa short and double or indistinct. 



A. Leaves not recurved, mostly obtusate ; alar cells 

 usually large 



31. Entodon. Capsule generally erect; lid often 

 rostrate; annulus mostly broad; endostomial segments lower 

 than the teeth. Mostly monoecious. 



B. Leaves recurved, acuminate and acute ; alar cells 

 small. 



32. Platygyrium. Capsule erect; lid seldom rost- 

 rate; annulus broad; endostomial segments not lower than 

 the teeth. Alar leaf-cells not numerous. Mostly dioe- 

 cious. 



