HANDBOOK OF BRITISH HEPATIC/E. 1 39 



culose, rootlets few, whitish. Leaves transversely 

 inserted, somewhat smaller and more distant 

 below, contiguous or imbricate above, subsecund, 

 unequally bilobed, margin ciliate-dentate, postical 

 lobe more distinctly ciliate, about twenty-five 

 cilia round the margin, antical lobe with five 

 to ten more distant teeth, about half the size of 

 the postical, convex, oval, triangular, rounded, 

 or abruptly subacute, appressed to the stem ; 

 postical lobe oval oblong, rounded or rarely 

 abruptly subacute, reflexed ; texture somewhat 

 firm, epidermis verruculose, several minute papillae 

 to each cell, cells small or minute, subquadrate. 

 Bracts rather larger than the upper leaves, 

 lobes more equal, anticai lobe rounded. Perianth 

 projecting half beyond the bracts, obovate, com- 

 pressed, mouth wide, truncate, spinosely ciliate. 

 Male stems more slender, perigonial bracts en- 

 closing leafy paraphyses along with the an- 

 theridia. 



Genus 20. DIPLOPHYLLUM, Dumort. 



Involucre small-leaved, leaves conduplicate, 

 bilobate, margin entire, conforming with the 

 true leaves. Perianth sessile, erect, free, 

 terete, toothed at the apex. Capsule four- 

 valved, coriaceous, naked ; elaters gemmate, 

 naked, deciduous. — Dumort. Rev. Jung. 



P- 15- 



Leaves -without stipules, complicate, bilobate, 

 anterior lobe smallest. 



