28 ORDER 7. 



sepals,' 3-bracted at base. Cor. of 6 short, gland-like thickened petals^ 

 opposite the sepals. Stam. 6. Ov. 2-ovuled, becoming a thin pericarp, which 

 soon breaks away after flowering, and the 2 round drupe-like seeds ripen 

 naked. 1C Glabrous and glaucous, arising from a knotted rhizome. Lvs. 

 2 only, 2 and 3-ternate. 

 C. thalictroid.es MX. Pappoose Root. Can., to Car. and Ky. 1 3|f. Lfts. lobed. 



2 3'. Fls. greenish, in a simple terminal panicle. Seeds on thick stapes, blue, aa 



large as peas. May. 



3. DIPHYLLBIA, MX. UMBRELLA-LEAF. (5z'c, twice, q>v\\ov 9 

 leaf.) Calyx of 5 sepals, caducous. Cor. of 6 oval petals larger than the 

 sepals. Stam. 6. Ov. eccentric. Stigma subsessile. Berry few-seeded, 

 seeds attached laterally below the middle. If. Glabrous, arising from a 

 thick, horizontal root-stock. Lvs. simple, peltate, 1 or 2 only. 



1>. cymosa MX. Mts. Va. to Ga. and Tenn. 1 2f. Leaf centrally peltate, or if 2, 

 alternately reniform-peltate, ample, lobed. Fls. white. June. Berries blue. 



4. JEFFERSONIA, Bart. TWIN-LEAF. (In honor of President Jef- 

 ferson, a patron of science.) Sep. 4. Pet. 8, spreading. Anth. 8, linear. 

 Stig. peltate. Caps, obliquely obovate, stiped, circumscissile, opening by a 

 lid. H Rhizome and matted fibres blackish. Scape bearing a single flower, 

 as tall as the 2-parted or binate leaves. Figs. 49, 189, 364, 426. 



J. dipliylla Bart. N. Y., W. and S. If. Fl. handsome, white. April. A singular 

 plant, called Rheumatism Soot. The pod has a persistent lid. 



5. PODOPHYLLUM, L. MAT APPLE. (IIovS, xodoS, foot, <pvAA.or, 

 leaf.) Sep. 3, concave, caducous. Pet. 6 9, obovate, concave. Anth. 

 9 18, linear. Beny large, ovoid, 1-celled, crowned with the solitary 

 stigma. U Barren sterns with 1 centrally peltate leaf, flowering stems 

 with 2 equal, opposite broad cordate-peltate leaves, and a large white 

 flower between. 



P. peltatum L. In rich shady soils. If. Fl. nodding, 2'. May. Fruit the size of a 

 plum, with flavor of strawberry. July. Lvs. and roots poisonous. 



ORDER VII. NYMPHS ACE^E. NYMPHIADS. 



Herbs perennial, aquatic (in deep water), with rhizomes submersed, 

 scapes one-flowered (rarely a leafy stem), and leaves peltate or deep-cor- 

 date. Flowers regular, showy, hypogynous (rarely epigynous), with im- 

 bricated petals and sepals. Carpels 3 oo, distinct or united. Ovules 

 parietal, never on the ventral suture. Seeds with the embryo enclosed in 

 a sac at the end of copious albumen, or (in Nelumbium) exalbuminous. 

 Illust. 202, 407-414, 505, &c. 



CABOMBE^E. Sepals 3. Petals 3. Carpels distinct, few -ovuled. Flowers small. () 



a Stam. 6. Carpels 3. Submersed leaves dissected CABOMBA. 1 



a Stam. 6 18. Carpels 6 oo. Leaves all peltate BKASENIA. 2 



$ NELUMBONE^E. Sep. 4 or 5. Pet. and stam. OO. Carp, immersed in the torus, dis- 

 tinct, exalhnminous. Fls. very large NRLUMKIUM. 3 



