632 



ALISMACE^E. 



ALTSMA FLANTAoo (Great Water-Plantain). 



of lilac flowers, the petals of which are very delicate, and 

 soon fall off. Fl. June August. Perennial. 



2. A. ranunculoides (Lesser Water-Plantain). Leaves 

 narrow, and tapering at both ends ; flowers in umbels. 

 Peaty bogs, not uncommon. Much smaller than the 

 last, and well marked by the above characters, as well 

 as by its larger flowers. 



* A. natans (Floating Water-Plantain) is found only 

 in mountain lakes ; it has floating leafy stems, and the 



