Explanation of Plate VIII. 



Adiantum obliquum Willd. p. 142. 



Figs, i, 2. Fronds of intermedium , forming a continuation of the series 

 on PI. vii. X Yz- 



Figs. 3-5. Pinnae of triangulatum near typical obliquum. Fig. 5 repre- 

 sents a basal pinna, fig. 4 the next one above it, and fig. 3 one 

 of the upper pinnae. X 1. 



