Explanation of Plate V. 



Pteris incisa Thunb. p. 140. 

 Fig. 1. The second pinnule from the base of a pinna, showing vena- 

 tion. X i- 

 Fig. 2. A basal pinnule. X 1. 



Hypolepis kostilis Presl. p. 142. 

 Fig. 3. A fertile pinnule. X 2. 



Hypolepis repens (L.) Presl. p. 142. 

 Fig. 4. A fertile pinnule. A little more than X 2. 



Adiantttm obliquum Willd. p. 142. 

 Fig. 5 The second pinna from the base of a once-pinnate frond [kaul- 



fussii). X 1. 

 Fig. 6. The basal pinna of kaulfussii showing the beginning of division. 



X 1. 

 Figs. 7-9. Pinnae from one frond showing an approach to the form 

 intermedium. Figs. 8 and 9 represent the two basal pinna?. The 

 remaining pinnae of this fond are undivided. X 1. 

 Fig. 10. A piece of ro jtstock of the form intermedium, with bases of 



fronds. X I. 

 Fig. 11. The obtuse tip of a pinna from the same frond as fig. 5. X 1. 

 Figs. 5-11 represent specimens from the La Juana River. 



