TJic Genus Riccardia in Chile. 



191 



Figure 13 



A-D. Riccardia pallidevirens (Steph.) Evans 

 A. Part of female thallus with three female branches, x 4. B. Trans- 

 verse section of thallus, median part, x 100. C. Transverse section of 

 thallus, marginal portion, x 100. D. Female branch, x 40. The figures 

 were all drawn from the type material of Ancura pallidevirens. 



E-H. Riccardia granulata (Steph.) Evans 

 E. Part of thallus, x 5. F. Transverse section of thallus, median 

 portion, x 100. G. Cells of three ventral layers, longitudinal section, 

 X 225. H. Cell of ventral surface layer, surface view, x 300. The figures 

 were all drawn from a specimen collected on Staten Island by C. Spegaz- 

 zini. No. 17. 



I, J. Riccardia crassicrispa (Steph.) Evans 

 I. Part of thallus, x 8. J. Transverse section of thallus, median por- 

 tion, X 100. The figures were both drawn from the type material of 

 Ancura crassicrispa. 



