SMALL, PONDWEED i GRAS S-WRACK -LIKT 
Potamogeton pusilbus 
FRASSY } 5. CURLY P 
SHARP-LEAVED F. 6 PERFOLIATE P 
P. acttufolrus. 
7, LONG = STALKED F 
P. preelongus 
Pl, 241. 
P 
P 
rispus 
| erfoliatus 
