63 



Calyptra mitre-form or hood-form. GRIMMIACE^E. 

 Calyptra four sided when young, enveloping a globular or pear- 

 shaped capsule with a thick neck. PHYSCOMITRIACE^E. 



142. Calyptra extinguisher-form, longer than the capsule. 



GRIMMIACEJI. 

 Calyptra hood-form or conical. 



Plants without stems, or with stems hardly apparent. Leaves rare 

 or none. Capsule large, oblique, swelled out in the middle, ses- 

 sile, or with a short, thick pedicel. BUXBAUMIACB^E. 



Stem distinct, leafy. Capsule on a long pedicel. BRYACE.B. 



143. Leaves folded together from the base, the wings being prolonged 

 into a single vertical plate with a rib extending to the apex of 

 tliis plate, or beyond. Peristome single, with sixteen unequally 

 two-cleft teeth. FISSIDENTACE^E. 



Vertical plate formed by an extension of the rib, which is narrow 

 at first but wider towards the apex. Wings partly folded. 



EUSTICHIACEJ!. 



PLEUROCARPS. 



144. Peristome double. 145 



Peristome consisting of a single fringe. 



Leaves narrow, ragged, made up of large cells. Teeth of the peri- 

 Btnme large, in pairs when young. Calyptra smooth.' 



FABRONIACE^;. 

 Leaves wide, entire, with narrow cells. 



Calyptra hood-form. NECKERACK i . 



Calyptra mitre-form. Leaves two ranked, clasping at base. 

 Tropical plants, but growing at high elevations. 



PHYLLOGONIACEJB. 



