PARKERIACEAE. 



CERATOPTERIS Brongn. 



Ceratopteris thalictroides (Linn.) Brongn. in Diet. Sc. Nat. III. 350. 

 Acrostichum thalictroides Linn. Spec, plant 1527. 



Paramaribo ; near Laan van Tourtonne : Kegel 622, in ditches ex 



Kunze 1. c. 206. 

 Surinam : Hostmann 55 ex Kze 1. c. ; Splitgerber ex Tijdschrift p. 



432, in water. 

 All tropical countries. 



