44 NYMPHAEACEAE. (Vor. IL. 
4. CASTALIA Salisb. in Konig & Sims, Ann. Bot. 2:71. 1805. 
Aquatic herbs, with horizontal perennial rootstocks, floating leaves and showy flowers. 
Sepals 4. Petals ©, imbricated in many rows, inserted on the ovary, gradually passing into 
stamens; stamens ~, the exterior with large petaloid filaments and short anthers, the interior 
with linear filaments and elongated anthers. Carpels «, united into a compound pistil with 
radiating linear projecting stigmas. Fruit globose, covered with the bases of the petals, 
ripening under water. [A spring of Parnassus. ] 
About 25 species, of wide geographic distribution. 
Flowers 3'-5'' broad, fragrant; leaves orbicular, purplish beneath. 1. C. odorata. 
Flowers 4/9’ broad, not fragrant; leaves orbicular, green both sides. 2. C. tuberosa. 
Flowers 1'-1'4' broad, not fragrant; leaves oval. 3. C. lelragona. 
1. Castalia odorata (Dryand.) Woody. & Wood. Sweet-scented White Water 
Lily. Pond Lily. Water Nymph. Water Cabbage. (Fig. 1531.) 
Nymphaea odorata Dryand.in Ait. Hort. 
Kew. 2: 227. 1789. 
Castalia pudica Salisb. in Konig & 
Sims, Ann. Bot. 2:72. 1805. 
Castalia odorata Woody. & Wood in 
Rees’ Cyclop. 6: no. 1, 1806. 
Nymphaea odorata var. minor Sims, 
Bot. Mag. p/. 1652. 1814. 
Rootstock thick, simple or with 
few branches. Leaves floating, orbi- 
cular or nearly so, 4’-12’ in diameter, 
glabrous, green and shining above, 
purple and more or less pubescent 
beneath, cordate-cleft or reniform, 
the sinus open but sometimes narrow; 
petioles and peduncles slender, with 
4 main air-channels; flowers white, 
ortinged with pink, 3/-5 4’ broad, del- 
iciously fragrant; petals numerous, 
in many rows, narrowly oblong, ob- 
tuse; fruit globose, or slightly de- 
pressed; seeds stipitate, oblong, 
shorter than the aril. 
_ In ponds and slow streams, Nova Sco- 
tia to Manitoba, south to Florida and 
Louisiana. June-—Sept. > 
Castalia odorata rosea (Pursh) Britton, Mem. Torr. Club, 5: 154. 1894. 
Nymphaea odorata var. rosea Pursh, Fl. Am. Sept. 369. 1814. 
Flowers large, deep pink or red. Eastern Massachusetts to New Jersey, near the coast. 
2. Castalia tuberdsa ( Paine) Greene. Tuberous White Water Lily. (Fig. 1532. ) 
Nymphaea tuberosa Paine, Cat. Pl. 
Oneida Co., N. Y. 132. 1865. 
Castalia tuberosa Greene, Bull. Torr. 
Club, 15:84. 1888. 
Rootstock thick, with numerous 
lateral tuberous-thickened branches, 
which become detached and propa- 
gate the plant. Leaves orbicular, 5/— 
12’ in diameter, floating, sometimes 
slightly pubescent beneath, green both 
sides, the veins very prominent on the 
lower surface; sinus open or closed; 
petioles stout; flowers pure white, 4/— 
9’ broad, inodorous or very slightly 
scented; petals oblong, in many rows, 
broader than those of C. odorata, ob- 
tuse; fruit depressed-globose; seeds 
globose-ovoid, sessile, longer than or 
about equalling the aril. 
Lake Champlain, west through the 
Great Lakes to Michigan, south to Tren- 
ton, N. J., Meadville, Pa., and eastern 
Nebraska. Summer. Nymphaea rent- 
Jormis Walt. of the southern Atlantic 
States is clearly a different species. 
