CHAPTER XXII

=MARATTIALES (FOSSIL).= Pp. 395–411.

_Ptychocarpus_ 397; _Danaeites_ 398; _Parapecopteris_ 398; _Asterotheca_ 398–400; _Hawlea_ 400; _Scolecopteris_ 401, 402; _Discopteris_ 402–404; _Dactylotheca_ 404–406; _Renaultia_ 406; _Zeilleria_ 407; _Urnatopteris_ 407; _Marattiopsis_ 407–409; Danaeopsis 409; Nathorstia 410, 411.

## CHAPTER XXIII =PSARONIEAE.= Pp. 412–426.

## CHAPTER XXIV =OPHIOGLOSSALES (FOSSIL).= Pp. 427–431.

## CHAPTER XXV =COENOPTERIDEAE.= Pp. 432–472.

I. Botryoptereae 434–443

II. Zygoptereae 443–470

## CHAPTER XXVI =HYDROPTERIDEAE AND SAGENOPTERIS.= Pp. 473–483.

Marsiliaceae 473–475; Salviniaceae 475–477; _Sagenopteris_ 477–483.

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