34 BRYACE^. 



Series II. CLADOCARPI. Fruit terminal on short lateral branches. 



Tkibe XVI. FONTINALE^. Aquatic plants, rooting at base only, 

 floating. Leaves thin. Flcnvers direcious. Calyptra cucullate. 

 Teetli of the double peristome linear; inner membrane divided 

 into long cilia forming a latticed cone by transverse partitions, or 

 the cilia free, longer than the teetb, appendiculate. 



Cilia united into a cone by transverse parti- 

 tions. 100. Fontinalis. 



Cilia simple or appendiculate, latticed in the 

 upper part only. 101. Dichelyma. 



Series III. PLEUROCARPI. Fruit lateral, sessile upon the stems 

 or branches. Flowers in axillary buds. 



Tribe XVII. NECKERE^. Primary stems creeping; the secondary 

 erect or creeping, witli dichotomous or pinnate branches. Leaves 

 smootli, minutely areolate. Caj^sule generally immersed in the 

 perichietium. Calyptra cucullate-conical, often hairy. Peristome 

 simple or double, rarely absent. 



Peristome double; teeth linear-lanceolate; 

 segments very narrow, linear; cilia none. 

 Calyptra rough or papillose. 102. Cryphsea. 



Peristome simple. Vaginule and calyptra 



hairy. 103. Leptodon. 



Secondary stems dendroid ; paraphyllia multi- 

 form. Peristome double; segments long- 

 linear, enlarged and carinate at base, with 

 or without cilia. 104. Alsia. 



Plants erect or pendent. Leaves flat, glossy. 

 Peristome double; inner membrane divided 

 into filiform segments. 105. Neckera. 



Plants distichous. Leaves diverging side- 

 wise, cultriform. Capsule long-pedicellate. 

 Peristome double. 106. Homalia. 



Plants long, pendent. Leaves cordate-clasp- 

 ing. Peristome double. 107. Meteorium. 



Tribe XVIIL LEUCODONTE^. Primary stems creeping; the sec- 

 ondary erect or pendent, simple or ramose. Leaves solid, sub- 

 scarious, plicate lengthwise; areolation in distinct rows, punctiform- 

 angular. Calyptra large, cucullate. 



Leaves deciirrent, not costate. Peristome 

 simple; teeth distantly articulate, 2-3-cleft 

 at apex. 108. Leucodon. 



Leaves slightly papillose on the back. Peri- 

 stome double. Teeth short; segments short, 

 imperfect; cilia none. 109. Pterigynandrum. 



Leaves scarious, glossy; areolation very small, 

 smooth. Calyptra sparingly hairy. Peri- 

 stome doulile ; segments half as long as the 

 teeth. Cilia none. 110. Pterog'Oniuin. 



I 



