The Genus Riccardia in Chile. 



173 



Figure 10 



A-C. Riccardia Negeri (Steph.) Evans 

 A. Part of thallus with one female branch, x 4. B. Tip of a vigorous 

 branch, showing two branch-rudiments, x 25. C. Transverse section of 

 axis, the ventral surface turned upward, x 100. The figures were all 

 drawn from the type material of Ancura Negeri. 



D-F. 

 D. Part of thallus, x 

 Transverse section of ultimate branch, x 100. 

 from the type material 



Riccardia mycophora Evans 

 5. E. Transverse section of 



axis, x 100. F. 

 The figures were all drawn 



