FUNGI ON FISH. 



73 



flowering rush (Butomus umbellatus), the water mint 

 (Mentha aquaticd), mare's tail (Hippuris vnlgaris) 



Fig. 27. 



Mare's Tail (Hippuris vittgaris). 



and others. Our native vegetation offers consider- 

 able choice, and for the beauty of the foliage and 



