NYMPHAEACEAE. 



[VOL. II. 



2. BRASENIA Schreb. Gen. PI. 372. 1789. 



Stem slender, several feet long, branching, covered with gelatinous matter as are the 

 petioles, peduncles and lower leaf-surfaces. Leaves alternate, oval, entire, 2 / -4 / long, long- 

 petioled, centrally peltate, floating, palmatcly veined. Flowers axillary, purple. Sepals 

 and linear petals 3. Stamens 12-18; filaments filiform. Carpels 4-18, separate. Ovules 2-3, 

 pendulous from the dorsal suture. Ripe carpels indehisceut, coriaceous, i-2-seedcd. [Name 

 unexplained.] 



A monotypic genus of North America, Cuba, 

 eastern and tropical Asia, west tropical Africa, and 

 Australia. 



i. Brasenia purpurea (Michx.) Casp. 

 Water-shield or -target. (Fig. 1526.) 



Menvanthes nymphaeoides Thunb. Fl. Jap. 82. 



1784. Not L. 1753- 

 Hydropeltis purpurea Michx. Fl. Bor. Am. 1:324. 



pi. 29. 1803. 

 Menyanthes peltata Thunb. Nov. Act. Upsal. 7: 



142. 1815. 



Brasenia peltata Pursh, Fl. Am. Sept. 389. 1814. 

 Brasenia purpurea Casp. in Engl. & Prantl, Nat. 



Pfl. Fam. 3: Abt. 2, 6. 1890. 



Rootstock slender. Leaves 2'-4' long, i#'- 

 2' wide, thick, rounded at each end; flowers 

 5 // -6 // in diameter, on long stout peduncles; 

 fruit oblong, 3 // -4 // long. 



In ponds and slow streams, Nova Scotia to 

 Florida, west to Manitoba and Texas. Also in 

 Cuba, Mexico, and at a ft- w stations <>n the Pacific 

 Coast from California to Washington. Summer. 



3. NYMPHAEA L. Sp. PI. 510. 1753. 

 [NUPHAR Sibth. & Smith, Fl. Grace. Prodr. i: 391. 1806.] 



Aquatic herbs, with cylindric thick horizontal rootstocks, and large cordate leaves with 

 a deep sinus. Flowers showy, yellow, or sometimes purplish. Sepals 5-6, concave, thick. 

 Petals oo , small, stamen-like, hypogynous. Stamens oo , hypogynous. Carpels w , many- 

 ovuled, united into a compound pistil. Stigmas disciform, 8-24-radiate. 

 Seeds with endosperm. [Greek, water-nymph.] 



A genus of about 8 species, natives of the north temperate zone. 

 Leaves broadly ovate or oval. 



Leaves 5'-i2' long; stigma 12-24-rayed; petals truncate, fleshy. 



Leaves 3'-io' long, stigma 9-1 2- rayed; petals spatulate, fleshy. 



Leaves 2' -4' long; stigma --io-rayed; petals spatulate, thin. 

 Leaves narrowly ovate or ovate-lanceolate. 



Large Yellow Pond Lily. (Fig. 1527.) 



.\\mphaea advena Soland. in Ait. Unit I, 



226. 1789. 



.\nphar advena R. Br. in Ait. Hort. Kew. Ed. 2, 

 3:295. 1811. 



Floating and cmersed leaves 5'-! 2' long, s'-g' 

 broad, ovate or orbicular-oval, thick, the sinus 

 2'-5 x deep, generally open; submerged leaves, 

 \\lu-n present, thin-membranous, nearly orbi- 

 cular, otherwise similar; petioles, peduncles 

 and lower surfaces of the leaves often pubes- 

 cent; flowers i/^ / -3>^ / in diameter, depressed- 

 globose, yellow or tinged with purple; sepals 

 6, oblong, about i%" long; petals fleshy, ob- 

 long, truncate, 4 // ~5 // long; stamens in 5-7 

 rows; anthers about the length of the fila- 

 ments; stigmatic disc undulate, yellow, or pale 

 red, rays 12-24; fruit ovoid, not deeply con- 

 stricted into a neck, i > / -2 / long, about i' thick. 

 In ponds and slow streams, New Brunswick 

 and Nova Scotia to the Rocky Mountains, south 

 to Florida, Texas and Utah. April-Sept. Rev. 

 Thos. Morong (Bot. Gaz. u: 167) describes a 

 var. (?) minor of Nuphar advena having 



smaller flowers, the margins of the .stigmatic disc more crenate, rays 10, and fruit only i' long. 



Called also Cow -lily and Spatter-dock. 



Fruit ovoid, naked. 



1. N. advena. 



2. A '. rtibrodisca. 



3. N. Kalmiana. 



4. \. 



i. Nymphaea advena Soland. 



