LEMNACEAE. 



LEMNA Linn. 



Lemna paucicostata Hegelm. in Flora Bras. Ill 2 p. 20. 

 Paramaribo: Wullschlagel 505. 

 Surinam : Weigelt ex Hegelm I. c. 

 All tropical countries. 



SPIRODELA Schleid. 



Spirodela polyrrhiza (Linn.) Schleid. Linnaea XIII 392. 

 Lemna polyrrhiza Linn. spec. 1377. 



Paramaribo: Wullschlagel 1572, ex Hegelm. I.e. 22. 

 Cosmopolitan. 



