Explanation of Plate VI. 



Adiantum obliquum Willd. p. 142. 

 Figs. 1, 2. Basal pinnae of kaulfussi. X !• 



Fig. 3. Basal pinna of the glaucous form of intermedium. X l« 

 Fig. 4. Basal pinna of typical obliquum. X I- 

 Fig. 5. Basal pinna of the var. (i. X I. 

 Fig. 8. Part of rootstock of typical form. X I. 



Figs. 1 to 4, and 8 represent specimens from Castillo, and fig. 5 from 

 Camp Menocal. 



Adiantum trapeziforme L. p. 145. 

 Fig. 6. A middle pinnule. X I. 

 Fig. 7. A terminal pinnule. X I. 



Adiantum tetraphyllum Willd. p. 146. 

 Fig. 9. Basal pinnule. X 1. 

 Fig. 10. Middle pinnule. X 1. 



