Jouroai Borr>bay Nat, Hist. Soc VOL. XVII. 



, - Stem 



Scaly stipule 

 Young submerged leaf 



Point of attachment of 

 the floating leaf 



FIG. 1. 



FIG. 4. 



TRAPA BISPINOSA. ROXB. 



A. P. CORTEZ & CO. LITH: 



