INTRODUCTION. 



XX 111 



Tcenidium lusitanicum, Hr. 

 Sphenopteris Mantelli, Brong. = Ony- 



chiopsis Mantelli (Brong.). 

 S. Gomesiana, Hr. 

 S. plurinervia, Hr. 

 S. valdensis, Hr. (in part) = Onychi- 



opsis Mantelli (Brong.). 

 S. anyustiloba, Hr. 

 S. lupulina, Hr. 

 Pecopteris Dunkeri, Schimp. = Clado- 



phlebis Dunkeri (Schimp.). 

 P. Cho/atiana, Hr. 

 Laccopteris pulchella, Hr. 

 Matonidium Gopperti, Ett., sp. 



Ctenidium integerrimum, Hr.- 

 0. dentatum, Hr. 

 Czekanowskia nervosa, Hr. 

 Sequoia lusitanica, Hr. 

 Sphenolepidium Sternbergianum, 



Dunk., sp. 



S. Kurriamtm, Dunk., sp. 

 S. debile, Hr. 



Brachyphyllum obesum, Hr. 

 B. corallinum, Hr. 

 Frenelopsis occidentalis, Hr. 

 ambusium latifolium, Hr. 

 Caulinites atavinus, Hr. 



More recently Saporta has published a note in the Comptes 

 Eendus for 189 1, 1 in which he mentions some interesting species 

 of fossil plants discovered at Cereal, between Cenomanian and 

 "Neojurassic" beds. Among the ferns he draws attention to 

 Sphenopteris Mantelli, Brong., S. plurinervia, Hr., S. valdensis, 

 Hr., and S. angustiloba, Hr. ; there are also two species of 

 Hepatica recorded, and two or three Lycopodiaceous plants, with 

 a remarkable new species, Isoetopsis Choffuti, referred to the 

 Isoetacea. Brachypfiyllum, Sphenolepidium and Frenelopsis are 

 quoted as Coniferous genera. 



The most important fossils are, however, certain species which 

 he considers to be Angiosperms, and especially Dicotyledons. 

 Poacites, Brong., Zosteris, Brong., and Delgadoa, Sap., are placed 

 among the Monocotyledons, with Protolemna and Protorrhipsis, 

 Andr., as representatives of the oldest known Dicotyledons, 



BELGIUM. 



Under the head of Wealden plants we must include the 

 following species of Cycads and Conifers described by Coemans 

 from Baume 2 : 



1 Compt. Rend. vol. cxiii. 1891, p. 249. See also Rev. gen. hot. vol. v. 1893. 



2 Mem. Ac. R. Belg. vol. xxxvi. 1867, p. 82. 



