Explanation of Plate XV. 



Asplenium latum Swz. p. 160. 

 Fig. i. Basal part of frond, showing lobed pinnae. X l« 

 Fig. 2. A pinna. X i- 

 Figs. 3, 4. Pinnae from one frond. X l« 

 Fig. 5. Pinnae from small frond. X 1. 



Asplenium celt idi folium Kze. p. 162. 

 Fig. 6. A pinna. The sori are all distinctly diplazioid. X 1. 



Asplenium sylvaticum Presl. p. 163. 

 Fig. 7. A pinna. The sori all diplazioid. X 1. 



