POLYANDRIA. POLTGYNIA. 25 



393. CYAMUS. Salisburij. (Water Chinquepin.) 

 Calix petaloiil, 4 or 5-leaved. Petals many. 

 Fruit turbinate, with a triuicated disk excava- 

 ted with numerous cells, each containing a sin- 

 gle seed. Seed an ovate tiut crowned with the 

 persistent style. 



The most mag-nificent of aquatic plants; leaves alter- 

 nate, peltate, orbicular, ample; peduncles extremely long 

 and axillary, rising considerably above the water, more or 

 less scabrous; flowers very larg-e, yellowish white or ro- 

 saceous. Petioles and peduncles giving out on incision 

 a milky fluid. 



Species. 1. C. hitsus. f JVelumbiurn luteum. Willd.') 

 Petioles and peduncles partly muricated, as well as in C. 

 indinis. Flower larger than that produced, by any other 

 plant in North America except Magnolia macrophylki. 2. 

 pentapctahts. A very doubtful plant as well as the follow- 

 ing. 3. remformis. 



Of this genus tlvere is another species indigenous to the 

 "vvateTs of India and Persia. 



\0L. II, 



