60 



Leaves two ranked or three ranked, becoming larger and hairy towards 

 the apex of the stem. Mouth of the capsule provided with a 

 fringe, or peristoine, visible with the microscope, when the lid 

 is removed. Peristome composed of sixteen two-cleft, linear, or 

 thread-like teeth. POTTIACEJE. 



Leaves two ranked, sickle-form, vertical, slightly clasping at base, 

 very smooth and shiny. Capsule lid obtuse. Tropical plants. 



DEEP ANOPHYLLACE^. 



Leaves turning in every direction, or else turning the same way and 

 sickle-form. 



Peristome formed of a single membrane. WEI&BIACE K. 

 Peristome formed of a single fringe. 136 

 Peristome formed of a double fringe. 141 

 Peristome none. 



Calyptra hood-form, or else mitre-form and four sided. 134 



Calyptra either mitre-form, but not four sided, or else extinguisher- 

 form. 



Calyptra large, partly or wholly covering the capsule. Leaves of 

 firm texture. Stem throwing out rootlets all along. GRIMMIACEJS. 



Calyptra minute, covering only the lid of the capsule. Whole plant 

 of loose texture, rarely branching, rooting only at base. 



SCHISTOSTEGACE.&. 



134. Leaves ovate lanceolate, sometimes ragged near the apex. Cellu- 

 lar tissue soft. Capsule globular or pear-form. 135 

 Leaves lance linear, usually channeled. Cellular tissue firm. 



Capsule striated or channeled. Leaves hairy. GRIMMIACE^. 

 Capsule not striated. Leaves not hairy. WEISSIACE^. 



135. Leaves not ribbed, edges ragged. GTKIMMIACE^E. 

 Leaves ribbed. 



Capsule with a distinct neck below. Calyptra four sided. 



PHYSCOMITRIM i i 



Capsule with no distinct neck. Calyptra hood-form. POTTIACE.E. 



