HANDBOOK OF BRITISH HEPATIC^. 



251 



t. 2873. Pellia calycina, Nees Eur. Leb. III., 

 386; Gott. and Rabh. Exs. 181, 242, 297, 

 339; Cooke Hep. fig. 172 ; Carr. and Pears. 

 Ex. No. 142, a, b. 



On shady wet banks. (Fr. Feb. Mar.) 



Considerable resemblance exists between this 

 species and P. epiphylla, but it differs in the shape 

 of the f ron d, 

 which is much 

 narrower, more 

 elongated, with 

 more numerous 

 subdivisions (in 

 the male fronds 

 linear); margins 

 more flexible, 

 wavy, and some- 

 times crisped ; 

 midrib better 

 defined at the 

 edge; the colour 

 of the mature fronds a darker green, destitute of 

 the brownish purple tinge on the midrib. Dioicous. 

 Males immersed in the frond, above the midrib. 

 The large ventricose perianth, and the short 

 included, and concealed, calyptra is constant 

 (fig. 173). 



i73- 



GENUS 37. PALLAVICINIA, Gray. 



Frond simple or bifid, with a distinct 

 median costa, radiculose beneath, antheridia 

 solitary, uniseriate at the margin of the 



