Obdee &— NBLUMBIACE^ 219 



obtuse, concave, caducous; petals 6-^9, obovato, concave; stamens 

 9 — 18, with linear anthers; berry large, ovoid, 1 -celled, crowned with 

 the solitary stigma. — H Low, rather poisonous herbs. Flowering steigs, 

 2-leaved. Fl. solitary. 



P. pelt^tum Ii. "Wild Mandeake. In woods and fields, common in the Mid. and 

 Western States, rare in N. Eng. S. to La. Height about IT. It is among our 

 more curious and interesting plants. St round, sheathed at base, dividing into 

 2 round petioles, between which is the flower. Lvs. broadly cordate, in 5 — T 

 lobes, each lobe 6' long from the insertion of the petiole, 2-lobed and dentate at 

 apex. Barron stems with one centrally peltate leaf. PI. pedunculate, drooping, 

 white, about 2' diam. Pr. ovoid oblong, large, yellowish ; with the flavor of the 

 strawberry. The root is cathartic. May. 



Order VII. CABOMBACE^. Water Shields, 



Berbs aquatic, with the floating Iva entire, centrally peltate, the submersed one* 

 dissected. Fls. small, erect, one on each peduncle, hypogynous. Petals 3 — i, 

 alternate with the 3 or 4 sepals which are colored inside, all persistent. Sta. twice, 

 or 4 or 6 times as many as the petals. Anthers adnate. Ova. 2 or more, distinct. 

 Slig. simple. fV. indehisceut, tipped with the hardened style. Sds. globular, 

 pendulous. Embryo, minute, 2-lobBd, external to an abundant, fleshy albumen. 



Odn&ra 9. spsolss 8. American water plants, extending from Cayenne, 8 America, N. to 

 N. Eng. ProperUts, slightly aatringont. 



1. BRASfiNIA, Schreb. Water Target. Calyx of 3—4 sepals, 

 colored within, persistent; corolla of 3 — 4 petals; stamens 12 — 24; 

 ovaries 6 — 18 ; carpels oblong, 2 (or by abortion l)-seeded. — U Aquatic 

 The stems and under surface of the leaves are covered with a viscid 

 jelly. Lvs. all floating, entire. 



B. pelt^ta Ph. It inhabits muddy shores and pools, often in company with the 

 water lily, Can. to Ga. and Ark. Lvs. peltate, elliptical, entire, 2 — 3' by 1 — 1 J', 

 with the long, flexible petioles inserted exactly in the center, floating on the 

 surface of the water, smooth and shining above. Pis. arising to the surface, on 

 long, slender, axillary peduncles. Petals purple, about 3" long. Jl. (Hydro- 

 peltis purpurea Mx.) 



2. CAB6MBA, Aublet. Sepals 3, petaloid ; petals 3 ; stamens 6 ; 

 pistils 3 (rarely 2 or 4), nearly the length of stamens, and half as long 

 as the petals and sepals ; carpels few-seeded. — Lvs. opposite, mostly 

 submersed and filiformly dissected, 



C. Carolinl^a Gray. In stagnant waters, N. Car. to Ga. and La. Stems 

 branched. Floating lvs. small (6" long, 1" wide) and few, oblong-linear, cen- 

 trally peltate; submersed lvs. many, reniform in outline, 1 — 2' broad, repeatedly 

 di and tri-chotomous into threadlike segments. Ped. 2' long, 1-flowered. Pis. 

 white, 6 — 6" broa4, strieOy \/, (sometimes y), with oval, obtuse petals yellow at 

 base. May. 



Order VIIL NELUMBlACEyE. Water Beans. 



Serbs aquatio, large, with prostrate rootstook and radical, peltate leaves, with 

 JUneers large, solitary, on long, upright scapes, 4 — S-sepaled; petals numerous, 

 arranged in many rows, as are also the stamens, ovaries separate, each with a simple 

 style and stigma, becoming in fruit 1-seeded nuts half sunk in the hollows of the 

 very large torus, the seeds with largely developed embryo, and no albumen. 



