NYMPH 'M 'AGE 'M. 81 



and two large inferior cotyledons. Cabomba consists of aquatic 

 herbs, whose stock bears herbaceous branches, covered, like all parts 

 of the plant, with a mucilaginous juice, and bearing the leaves. The 

 lower leaves are submerged and the digitiveined blade is reduced to 

 its ramified veins ; the upper ones are peltate and float on the 

 surface (fig. 82). The flowers, white or yellow, rise into the air to 

 expand ; they are solitary axillary on long peduncles. Two or 

 three species of this genus are known, all natives of the warm parts 

 of America. 1 



Brasenia 2 comes very near Cabomba, whereof it lias the general 

 organization : it differs in three points ; all its leaves are floating 

 and peltate ; the indefinite stamens have lateral anther-ceils ; and 

 there are six or more carpels. The only known species 3 has been 

 observed in the fresh waters of nearly all tropical regions, in America, 

 Asia, and Oceania. 



III. AVATER-LILY SERIES. 



Two species of Water-lily (Fr., Nenuphar) are best known in 

 Europe : the White and the Yellow. The latter has been made the 

 type of the genus Nuphar,* and with it we shall commence the study 

 of this series. N. luteum* (figs. 87-92) has regular hermaphrodite 

 flowers. The receptacle is convex, and bears a double perianth, the 

 androceum, and the gynaeceum. The calyx usually comprises five fi 

 somewhat dissimilar sepals/ quincuncially imbricated in the bud. 

 The petals are numerous, small, and somewhat fleshy, inserted along 



1 Torr. & Gr., Fl. N.-Amer., i. 54— Walp., 4 Sm., Prodr. Fl, Grcec, i. 361.— DC, Syst., 



Rep., i. 105. ii. 59 ; Prodr., i. 11G. — Spach, Suit, a Buffon, 



" Schkeb., Gen., 372. — Endl., Gen., n. vii. 174.— Exdl., Gen., n. 5021. — A. Gray, 



5025.— A. GRAY, Gen. III., t. 39.— B. H., Gen., Gen. III., t. 41.— B. H., Gen., 46, 965, n. 3.— 



46, n. 2. — Ixodia Soland., mss. (ex Endl.).— Wymphosanthus Rich., Anal, du Fruit, 68 (nee 



Hydropeltis L. C. Rich., in Ann. Mus., xvii. Lour.). — Nenuphar Hayn., mss. (ex Endl.). 



230, t. 5, fig-. 22. — Michx., Fl. Bor.-Amer., i. 5 Sm., loc. cif. — Dub., But. Gall., 20. — 



323, t. 29.— DC, Syst., ii. 3S ; Prodr., i. 112. TrScul, in Ann. Sc. Nat., ser. 3, iv. 286, t. 10- 



3 B. nymphoides.—B. peltata Pursu, Fl. 13. — Gren. & Godr., Fl. de Fr., i. 56.— Nym- 



Amer. Bur., ii. 389. — Walp., Pep., i. 105; phcea lutea L., Spec, 729; Fl. Dan., t. 603. 



Ann., iv. 150. — Menyanthes nymphoides 6 Sometimes four or six. 



Thunb., Fl. Jap., 82. — Limnanthemum pel- ' They become broader, thinner, yellower 



tatum Griseb., in DC, Prodr., ix. 141 (ex Pl., and more pctaloid, as they are more enfolded in 



in Ann. Sc. Nat., ser. 4, ii. 257). — Hydropeltis the bud; the exposed parts remain green and 



purpurea L. C Rich., loc. cit. thick. 



VOL. III. G 



