HANDBOOK OF BRITISH HEPATIC^. 269 



duced in cup-shaped processes on the surface of the 

 frond, and on the midrib. 



GENUS 42. LUNULARIA. Mich. 



Male receptacle sessile. Margin membran- 

 ous, elevated. Female receptacle divided into 

 cells, the apex of which open by a longitu- 

 dinal fissure. Calyx none. Capsule quadrival- 

 vular, exserted. 



Lunularia vulgaris, Mich. 



Fronds densely clustered, i to 2 inches in 

 length, of a light shining green, divided into 

 three or four lobes with the margins waved. 

 Male receptacle sessile. Female receptacle 

 stalked, with four linear lobes. Capsules 

 elongated, blackish, opening with four valves. 



Marchantia Icevis, Hook. Eng. Fl. V., p. 103. 

 Lunularia vulgaris, Mich. Nov. Gen. t. 4; 

 Tayl. Linn. Trans. XVII., 308 ; Cooke Hep. 

 f. 185 ; Carr. and Pears. Exs. No. 148. 



On road-sides or banks. 



Dioicous. Frond furcate, innovant at the apex, 

 radiculose beneath from the effused median costa. 

 Dorsal epidermis distinctly areolate and porose, 

 walls of the cells thick. Apex of the common 

 peduncle incrassated, involucrate at the base, mem- 

 branaceous involucre polyphyllous. Partial invo- 



