130 PP. REPORT OF PEOGRESS. FONTAINE & WHITE. 



Plate XXIII. 



Fig. 1. Pecopteris imbricata, Spec. noY. 

 "• 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, 1^. Pecopteris species ? 



XXV. 



Fig. 1. Pecopteris asplenioides, Spec. nov. 



1". Fertile and sterile pinnules enlarged. 



" 2. Pecopteris gonioj^teroides, 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. 



" -:". Pinnules of the same enlarged. 



" 5. Portion of the lower j^art 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. 



