PLATE XXIV. 



PAGE 



Fig. 1. AcKOSTiCHOPTERis CYCLOPTEROiDES Fontaine 226 



Dutch Gap, Virginia (after Fontaine). 



Figs. 2, 3. AcROSTiCHOPTERis ADiANTiroLiA (Fontaine) Berry 224 



Fredericksburg, Virginia (after Fontaine). 



Figs. 4, 5. AcEOSTiCHOPTERis PARviFOLiA Foutaiue 226 



Fredericlvsburg, Virginia (after Fontaine). 



Fig. 6. AcROSTiCHOPTEEis PLURiPAETiTA (Fontaine) Berry 227 



Dutch Gap, Virginia. 



Fig. 7. ACROSTICHOPTERIS LoxGiPEXNis Fontaine 223 



Aquia Creek Cut, Virginia. 



