130 PP. EEPOKT OF PROGRESS. FONTAINE & WHITE. 



Plate XXIII. 



Fig. 1. Pecopteris imbricata, Spec. nov. 

 " 1«. Enlarged pinnules of the same. 



^' 2-3. Pecopteris Miltoni, Brongt. These are varietal 

 forms of this polymorphous plant. 



XXIV. 



Figs. 1-5. Pecopteris Schimperiana, Spec. nov. 

 " 1. Gives the normal form. 



" V. Enlarged pinnules of the same. 



" 2. A portion from the lower part of the frond. 



" 2". Enlarged pinnules of the same. 



" 3, 4. Give another form somewhat different. 



" 5. A portion from the upper part of the frond. 



" 6. Pecopteris rotundifolia. Spec. nov. 

 " 6". Portion of a pinna of the same enlarged. 



7, 7". Pecopteris species 1 



u 



XXV. 



Fig. 1. Pecopteris asplenioides, Spec. nov. 

 " 1**. Fertile and sterile pinnules enlarged. 



" 2. Pecopteris goniopteroides, Spec. nov. 

 ' ' 2*. Enlarged pinnules of the same. 



" 3-7. Pecopteris Heeriana, Spec, nov, 

 " 3. Fructified portion of the plant. 



3". Enlarged pinnule of the same. 



4. Portion of the sterile plant from the upper 

 part of the frond. 



4". Pinnules of the same enlarged. 



5. Portion of the lower part of the frond show- 

 ing crenulated pinnules. 



6. A portion of a pinna from near the summit 

 of the frond. 



7. Summit of compound pinna or frond. 





(( 



(( 



(( 



" 7". Pinna of the same enlarged. 



