18 CABOMBACEiE. (WATER-SHIELD FAMILY.) 



4. JEFFERSONIA, Barton. Twin-leaf. 



Sepals 4, petal-like, caducous. Petals 8, oblong. Stamens 8. Stigma nearly 

 sessile, 2;lol)cd. Capsule coriaceous, obovate, many-seeded, opening transversely 

 on the hack, near the summit Seeds numerous, furnislicd with a fk'.shy lacini- 

 ated aril. — A low stcmless perennial herb, with long-pctioled, 2-parted leaves, 

 and naked scajjcs, bearing a single white flower. 



1. J. diphylla, Pers. — Rich shady woods, Tennessee and northward. 

 April. — Lobes of the leaves half-ovate, entire or toothed. Scapes 6' - 12' high. 

 Flowers 1' wide. 



5. PODOPHYLLUM, L. Mat-Apple. 



Sepals 6, caducous. Petals 6-9, obovate. Stamens twice as many (in oar 

 species) as the petals. Anthers opening longitudinally. Stigma large, peltate, 

 sessilp. Fruit baccate, many-seeded. Seeds enveloped in a pulpy aril. — A low 

 perennial herb, with the naked stem terminated by two large peltate, 5-9-parted, 

 lobed and toothed leaves, with a solitary nodding flower in the fork. 



1. P. peltatum, L. (Mandrake.) — Rich woods, Florida and north- 

 ward. April and May. — Stems 1° high, the baiTcn ones terminated by a 

 single centrally peltate leaf, smooth. Leaves 4' -6' wide. Flowers 1' wide, 

 greenish. Berry l'-2' long, ovoid, yellow, fragrant. 



Okder 6. NELU3IBIACEiE. (Nelumco Family.) 



A(iuatic hcrb.«, with large circular centrally peltate floating leaves, and 

 solitary liypogynous flowers on long peduncles. Sepals and petals sim- 

 ilar, in several rows, imbricated in the bud, deciduous. Stamens indefi- 

 nite, the slender filaments prolonged above the linear, adnate, introrse 

 anthers. Ovaries separate, 1-celled, 1-ovuled, imbedded in the flat sum- 

 mit of the large obconical torus, forming large globular nuts in fruit. 

 Stigma nearly sessile, peltate. Seeds suspended. Embryo large. Al- 

 bumen none. 



1. NELUMBIUM, Juss. Nelumbo. 



Characters of the order. 



1. N. luteum, AVilld. (Water Ciiinquepin.) —Lakes and still water, 

 Florida, near Tallahassee, and northward and westward. Not conmion. July. 

 — Khi/.oma large, creeping. Leaves l°-2° wide, depressed in the centre 

 Flowers 5' - 6' wide, pale yellow. Aj»pendage of the anthers linear. 



Order 7. CABOMBACE^E. (Water-shield Family.) 



Aquatie perennial herbs, with peltate or dissected leave.<», and .Military 

 hypogynous flowers on long a.xiliary peduncles. Sepals 3-4, colored 



