25 



69. Oligotrichum. Leaves lamelliferous on both 

 sides, inot contracted above the base, more or less crisped; 

 lamellae not numerous, those of the upper side sinuolate,. 

 those of the under side usually serrate. Capsule sub- 

 symmetric without angles and apophysis ; calyptra sparingly 

 hairy or glabrous, 



70. Psilopilum. Leaves not lamelliferous at back, 

 contracted above the base, rigid; lamellae numerous, sinu- 

 olate. Cap-sule asymmetric without angles and apophysis ; 

 calyptra glabrous. 



71. 5ar^ramjops/s (new genus). Leaves not lamellife- 

 rous at back, long-ciliate near the sheathing base, flaccid, 

 more or less crisped when dry; lamellae few, serrate. 

 Capsule without angles and apophysis; teeth, lid and 

 calyptra unknown. 



b. Leaves lamellate only at the upper side ; lamellae 

 neither sinuolate nor serrate. 



72. Catharinella (new genus). Leaves not con- 

 tracted above the (more or less or not sheathing) base, 

 flaccid, crisped when dry ; lamellae numerous, not densely 

 cohering. Capsule papillose without angles and apophysis; 

 calyptra densely hairy, short-acuminate. 



73. Polrftrichum. Leaves abruptly contracted above 

 the distinct sheath, often rigid, sometimes incurved, not 

 crisped; lamellae densely cohering, seldom (in one species) 

 few (about 10), otherwise numerous. Capsule smooth or 

 papillose, often with angles and apophysis ; calyptra densely 

 hairy with a not long acumen, rarely (in one species) 

 sparingly hairy and long-acuminate. 



Fam. 18. GeorgiacesB. 



74. Georgia. Capsule exserted. Leaves smooth;' 

 cells small, the' upper short, hexagonal or oval. Plants 

 small, sometimes minute. 



Fam. 19. Pissidentacese. 



75. Fissidens. Peristomial teeth united in pairs, 



