NYMPHiEA. NYMPHyEACEiE. 39 



1. NYMPHyEA. Tourn. ; Endl. gen. 5020. WHITE WATER-LILY. 



[So called fioiii its inhaliitin^ the water as the nymphs were wont to Co.] 



Sepals 4, at the base of the torus. Petals numerous, inscrlcd, as well as the stamens, into 

 the fleshy torus surrounding the ovary. Flowers white or rose-color. 



1. Nymph.«.\ odor ATA, Aif. Great White Water-libj. 



Leaves oval-orbicular, or somewhat rcniform, with the primary veins prominent and nu- 

 merous underneath ; stigma 16 - 20-rayed ; rays incurved. — Torr. <J- Gr.jl. N. Am. 1. p. 57. 



var. 1 : sinus and lobes of the leaves more or less acute. — Torr. tj- Gr. I. c. N. odorata, 

 Ait. Kew. {ed. 1.) 2. p. 227 ;. Willd. hort. Berol. 1. i. 39 ; Pursh, jl. 2. p. 368 ; DC. syst. 2. 

 p. 57 ; Ell. sk. 2.p. 7 ; Hook.fl. Bor.-Am. \.p. 32. N. alba, Michx.Jl. 1. ;j. 311. 



var. 2: smaller; leaves and peduncles purplish; flowers rose-color. — Torr. <^- Gr. I. c. 

 (under var. ^.) N. odorata, var. rosea, I'ursli, I. c. N. odorata, var. minor, Bot. mag. 

 t. 1652. N. minor, DC. I. c. 



Rhizoma very thick, creeping in the mud. Petioles and peduncles about the size of a crow- 

 quill, varying in length according to the depth of the waler. Leaves 4-7 inches long and 

 3-6 inches wide, coriaceous, always lying on the surface of the water ; the sinus reaching 

 to the centre of the lamina. Flowers 3 inches or more in diameter when fully expanded, very 

 odorous, usually closing in the aflcrnoon. Sepals about as long as the outer petals, elliptical. 

 Petals about 30, the inner rows gradually becoming narrower and passing into stamens. 

 Stigma large, sessile, yellowish, with a roundish gland in the centre ; the margin formed of 

 numerous linear incurved rays. Fruit baccate, ovate, marked by the insertion of the stamens 

 and petals. 



Not uncommon in ponds and slow-flowing streams. June - August. One of the most orna- 

 mental plants of the United States. The var. 2. occurs in sliallow ponds on Long Island. 

 The rhizoma is sometimes used for dyeing a brown color, and also as a styptic and tonic. 



2. NUPHAR. Smith; Endl. gen. 5021. YELLOW POND-LILY. 



[The name nuphar, of DioscoriJcs, has been apiilicd to this genus. According to FOrskal, the Arabic name is naufar.} 



Sepals 5-6. Petals numerous, nectariferous on the back, much smaller than the sepals, and 

 inserted with them and the stamens at the base of the torus. Flowers yellow. 



1. NuPHAR LUTEA, Smith. SmaU-JbiDe7-ed Yellow Pond-lily. 



Sepals 5; stigma 16 - 20-rayed, deeply umbilicate ; the margin entire; leaves cordate- 

 oval, with approximate lobes; petioles triquetrous (DC). — Ait. Keiu. {ed. 2.) 3. p. 295; 

 Pursh, Jl. 2. p. 369 ; Hook.fl. Bor.-Am. l.p. 32 ; Bong. veg. Sitcha, p. 124 ; Torr. ^ Gr. 

 fl. N. Am. 1. p. 5S. Nymphsa lutea, Linn. 



