174 HANDBOOK OF BRITISH HEPATIC^. 



Growing in rather dense pale -green tufts. 

 Stems about inch long, ascending, thread-like, 

 waved, and simple, attached 

 by white radicles. Leaves 

 distantly and bifariously 

 placed, in barren shoots 

 smallest at the base and ex- 

 tremity, in fertile largest to- 

 wards the calyx, orbicular, 

 a little concave and de- 

 current, mostly horizontal, 

 spreading, sometimes to- 

 wards the apex, erect (fig. 

 127), pale green. Perichaetial 

 'leaves more ovate, always 

 I28> larger. Calyx oblong, in- 



clining to obovate, without angles, cut at the apex 

 into four large acute teeth (fig. 128). Capsule 

 spherical, brown, shining. Elaters short, bispiral. 



Aplozia riparia, Tayl., Dum. 



Rooting, leaves obovate, obtuse or subemar- 

 ginate, perichaetial saccate, spreading, squar- 

 rose. Perianth pear-shaped, plicate at the apex, 

 compressed frontally, mouth contracted, den- 

 ticulate. 



Jungermanniariparia,Ta.y\. Trans. Bot. Soc. 

 Edin. II., 43 ; Gott. and Rab. Exs. No. 428 ; 

 Cooke Hep. fig. 69. Aplozia riparia, Dum. Hep. 

 Eur. p. 63. 



var. minor, Carr. and Pears. Exs. No. 168, 

 169. 



