76 NYMPH.EACE^. Nyinphcea. 



* * Flowers white varving sometimes to rose-color ; the centre commonly pale yellow : 

 autliers iiiappendiculate ; pollea minutely echinulate : prostrate rootstocks elongated and 

 cylindrical : no stolons: leaves entire, obscurely if at all peltate, generally orbicular with 

 narrow or more open sinus. 



N.* tetragona, Geokgi. Kootstock short, vertical or nearly so, woolly with dark hairs : 

 leaves oval, witli deep but rather open sinus, acutish lobes, and entire margin, usually small, 

 1 .1 to 3 (rarely 6 to 8) inches long, two tliirds as broad : flowers li to 2^ inches in diameter : 

 sepals green outsi<le, oblong lanceolate, often acutish, 1 inch long: petals 8 or 10, white, or 

 faintly marked with purple, a little shorter than the sepals : stamens 3-4-seriate : carpels 

 about 7; the free tips of the stigmas short and blunt. — lieise Russ. Reiche, i. 220. 

 N. pijgmcea. Ait. f. Kew. ed. 2, iii. 293; Sims, Bot. Mag. t. 1525. Castulia tetra(jona, Law- 

 son, Trans. Roy. Soc. Canad. vi. Sec. 4, 112; Morong, Mem. Torr. Club, v. 154 ? C. Leibergi 

 (N. Leiberfi't), Morong, Bot. Gaz. xiii. 124, t. 7, as to flower only, the leaves being evidently 

 those of a JVuphar. — Ponds, Kootenai Co., N. Idaho, Ltibenj ; also (ace. to Britton, Trans. 

 N. Y. Acad. ix. 6) in Severn Riv , Keewatin, Canada, J. M. Macoun, and Misiuaibi Riv., 

 Ontario, R. Bdl. (Siberia to India.) 



N. odorata, Ait.^ Rootstock with sparing and persistent branches : leaves floating, com- 

 monly reddish beneath, rarely over 6 or 8 inches in diameter: flowers deliciously fragrant: 

 sepals dull green tinged with purple : petals pure wiiite with sulphur-yellow centre, or not 

 rarely tinged with rose, rarely bright rose-color, oval to oblong-lanceolate, li to 2i inches 

 long : seeds oblong, I to li lines long, stipitate in the arillus. — Kew. ii. 227 ; - Willd. Ilort. 

 Berol t. 39 ; Andr. Bot. Rep. v. t. 297 ; Sims, Bot. Mag. t. 819; Gray, Gen. 111. i. 102, t. 42, 

 43 ; Sprague & Goodale, WQd Flowers, 161, t. 38, N. alba, Walt. Car. 155 ; Michx. Fl. i. 

 311. Castalia puJica, Salisb. Parad. Lond. 14, & Ann. Bot. ii. 72. — In still water, New- 

 foundland to Winnipeg, and south to Florida and Texas. (Cuba.) 



Var. minor, Sims. Leaves only 2 or 3 inches in diameter and often crimson beneath ; 

 petioles and peduncles either glabrous or villous : sepals and petals an inch or two long, 

 varying from pure white to light rose or even bright pink. — Bot. Mag. t. 1G52; Torr. & 

 Gray, Fl. i. 57. N. odorala, var. rosea, Pursh, Fl. ii. 369 ; Hook. f. Bot. Mag. t. 6708. 

 N. rosea, Raf. Med. Fl. ii. 45. — Shallow water, same range as the larger-flowered, passing 

 freely into it, also from pure white to pale yellow or deep pink-rose. 



N. reniformis, DC. Propagating by easily detacher! oblong tuber-like branches of the 

 rootstock : leaves in shallow water emersed and ascending or erect, rarely purplish beneath, 

 more prominently and copiously ribbed and veiny, the larger a foot or more in diameter 

 flowers odorless or slightly scented: sepals green outside, ratlier dull white within, never 

 rose-tinged : petals elongated-oblong, 2 or 3 inches long : fruit more depressed : seeds globu- 

 lar-ovoid, H lines in diameter, not stipitate in the arillus. — Syst, ii. 55; Deless. Ic. Sel. 

 ii. t. 5, not Walt. N. tuberosa, Paine, Cat. PI. Oneida, 132; Gray, Man. ed. 5, 56; Garden, 

 ■ xxi. 130, t. 325. N. alba, Nutt. Gen. ii. 13 ; Graham, Edin. Kew Phil. Journ. i. 386, var. 

 Canadensis ? 3 — Still and slow-flowing waters. New York and Canada * along the Great 

 Lakes, to Minnesota, Illinois, and prol)al)ly in the S. Atlantic States. 



* * * Flowers yellow : anthers inappendiculate or nearly so ; pollen smooth : root'stocks 

 short, roughened with salient pulvini of fallen leaves, sending off from apex along with 

 leaves and blossoms elongated naked stolons. 



N. flava, Leitner. Leaves of broadly oval outline and with narrow or closed sinus, 3 to 8 

 inches long, commonly crimson-purple beneath ; margin somewhat undulate or repand and 



1 A noteworthy form of this plant, or' perhaps distinct species, has recently been discovered at 

 Eustis, Florida, by G. V. Nash. The leaves are a foot or two in diameter with strongly upturned 

 margins; flowers white, said to be odorless. This form has been confidently identified with N. reni- 

 formis, Walt., by the collector, Bull. Torr. Club, xxii. 147, a disposition in no sense warranted by 

 the brief and wholly dubious characterization of Walter's species. 



2 Exd. Siberian plant of Gmelin, which is N. tetragona, Georgi. Add syn. CastaUa odorata, 

 Woodv. & Wood in Rees, Oycl. vi. no. 1. 



8 Add sjTi. CastaUa tuberosa, Greene, 1. c. 84. 



* Also at Ferrisburgli, Vermont, Braintrd ; and reported from near Trenton, N. J., Abbott, and 

 Meadville, Penn. (see Gard. & For. i. 308, f. 58, 59, & vi. 415, f. 62) ; also near Little Rock, Arkansas, 

 CoviUe. 



