HANDBOOK OF BRITISH HEPATICJE. 255 



the apex of the frond ; peduncle emerging 

 from the apex. Perianth internal. Capsule 

 four - valved, coriaceous, naked. Elaters 

 double, naked, deciduous. 



Plants without leaves, frondose, the fronds having 

 nerves. 



Blasia pusilla, Linn. 



Utricular involucre immersed, adnate to the 

 frond ; elaters double, free. 



Form /3 capsulifera, Hubn. 



Jungermannia blasia, Hook. Br. Jung., t. 82, 

 84. Blasia pusilla, Linn. Sp. 1605 ; Carr. and 

 Pears. Exs. No. 145, 146, 287 ; Cooke Hep 

 fig- 173- 



On the margin of ditches. (Fr. Mar. Apr.) 



Growing in patches, often imbricating. Radicles 

 more or less numerous, and on difierent parts, fre- 

 quently along the 

 underside of the nerve. 

 Frond horizontal, 

 prostrate, the apices 

 often erect, to I 

 inch long, for the most 

 part oblong, some- 

 times simple, or with 

 a single lateral branch, *77 



but sometimes more divided dichotomously; atother 

 times the ramification is almost palmate, having the 

 ends forked, extremities always wider than the 

 base, more rarely the fronds are stellate, substance 



