15 



winter bud 



Figure 6. 

 Myriophyllum spicatum: A. habit of submersed form 

 with emergent inflorescence, x Va. B. leaf, x 1. C. flow- 

 ers, X 2. D. fruits, X 2. 



Myriophyllum exalbescens: E. habit of submersed 

 form with emergent inflorescence, ^ V2. F. leaf, x 1. G. 

 flowers, X 2. H. immature fruit, x 2. 1, mature fruit, x 2. 



