40 NYMPHiEACEiE. Nothau. 



var. Kalmiana: stigma 8- 14-rayed, somewhat crenate. Torr. <^ Gr. I. c. N. Kalmiana, 

 Pursh I. c. ■ Hook. I. c. Nymphaea lutea, var. Kalmiana, Michx. I. c. N. Kalmiana, Bot. 

 mag. t. 1243. 



Leaves always floating, 3-6 inches long (in the var. Kalmiana usually much smaller, 

 sometimes scarcely more than an inch long). Flower an inch and a half (the var. scarcely 

 an inch) in diameter. 



In ponds and slow-flowing waters : not rare in the interior of the State ; but seldom found 

 near the seacoast. Fl. June. 



The small-leaved variety has been considered as a distinct species by some botanists ; but 

 it often passes into the common form. 



2. NuPHAR ADVENA, AH. Commoii Yellow Pond- or Water-lily. Spatterdock. 



Sepals commonly si.if, the outer ones smaller; stigma slightly umbilicate, 12-25-rayed, 

 the margin repand or crenate ; leaves cordate, with the lobes diverging ; petioles semiterete. — 

 Pursh, fl. 2. p. 36 ; Ell. sk. 2. p. 8; Hook. fl. Bar. -Am. 1. p. 32; Darlingt. fl. Cest. 

 p. 318; Torr. <^ Gr.fl. I. p. 58. Nymphaea advena, Michx. fl. l.p. 311. 



Rhizoma rooting in the mud at the bottom of the water, 2-4 inches in diameter and 

 several feet long, marked with the scars of former petioles. Leaves erect in shallow water, 

 floating on the surface when the water is deep, 6-10 inches long and 4-7 inches wide, 

 somewhat coriaceous ; petioles and peduncles varying in length according to the depth of the 

 water, stout. Flowers about two inches in diameter. Sepals roundish, concave, roughish : 

 the three exterior green, mixed with some yellow ; the three interior larger, yellow tinged with 

 green at the base. Petals 10 - 14, oblong, cuneate, truncate, fleshy, not half the length of 

 the sepals; the inner ones gradually passing into stamens. Stamens 100 or more, at first 

 closely applied to the ovary, at length spreading. Ovary oblong ; the stigma large and sessile ; 

 the upper surface marked with 12-25 (usually from 12-16) elevated radiating lines, which 

 are the true stigmas of the several carpels. 



Ponds and slow-flowing streams ; often where the water is brackish : common throughout 

 the State. Fl. Early in May - September. Fr. August - September. It is not easy at all times 

 to distinguish this (especially the var. Kalmiana) from the preceding species. The flowers 

 sometimes occur with five sepals, and the stigma in the latter is often a little crenate. The 

 rhizoma is bitter and astringent, turning quickly black when cut with a steel knife. It is 

 sometimes used in domestic practice as a tonic, and, in a bruised form, as a poultice. 



