19 



33. Tripterocladium. Capsule often cernuous; lid 

 not rostrate; (annulus not seen); endostome lower than 

 the teeth. Alar leaf-cells numerous. Mostly monoecious. 



Fam. 11. Climaciacese (new fam.) 



A. Capsule symmetric; pedicel smooth. Branch- 

 leaves generally serrate. 



I. CUmadece. Branches with numerous paraphyllia. 

 Columella of the capsule exserted. Endostome without ciha. 



34. Climacium. Inner leaf-cells narrow; alar cells 

 short, numerous, often finally reddish; costa simple. The 

 naked part of the stem usually long; branches simple, 

 fasciculate. 



II. Isotheciece. Branches without paraphyUia. Colu- 

 mella of the capsule not exserted. Endostome often with 

 cilia. 



35. Alsia. Leaves not mamillose; inner cells narrow^ 

 the alar ones numerous ; costa simple. Cilia of the endo- 

 stome appendiculate ; segments long. 



36. Isothedum. Leaves (principally the uppermost) 

 mamillose above; inner cells mostly narrow, the upper 

 ones sometimes dilated; alar cells not numerous; costa 

 simple. Ciha of the endostome seldom appendiculate ; 

 segments long. 



37. Pterogonium. Leaves mamillose; inner cells 

 suboval, the alar ones very numerous; costa short and 

 double. Segments of the endostome short; cilia wanting. 



B. Capsule generally asymmetric ; pedicel sometimes 

 rough. Branch-leaves sometimes entire or denticulate. 



III. Hylocomiece. Upper and middle leaf-cells narrow. 

 38 Hylocomium. Endostome with cilia. Pedicel 



of the capsule often rough. Alar leaf-cells generally not 

 large, sometimes indistinct; costa mostly double. Stem 

 pinnate or bi-tripinnate ; the naked part not long; para- 

 phyllia sometimes wanting. 



39. Girgensohnia. Endostome without cilia. Pedicel 

 of the capsule smooth. Alar leaf-cells very large; costa 



