American Species of Marchaniia. 



303 



/. ^A shows a plant with numerous cupules and female recep- 

 tacles, while /. 3C shows a small forking fragment with cupules 



Fig. 18. Marchantia chenopoda L. 



Appendages of ventral scales, x 100 A-C. . PeruC..^ toHvia' H ^//' 

 D-F Bolivia, A. d'Orbigny, type of M. peruviana. G, H. Bolivia, /i. li. 

 Rusby 3004. I, J. Bolivia, P. Jay 71- 



only. The receptacles are so strongly convex that they appear 

 conical and resemble those of Conocephalum comcum (L ) 

 Dumort. In fact, according to Lehmann and Lmdenberg, the 



