ARALIACE.E. (gINSENG FAMILY.) 183 



25. OSMORRHIZA, Raf. 

 Calyx teeth obsolete. Fruit clavate, angled. Carpels with bristly ribs, 

 furrowed on the commissure. Vittae none. — Perennial herbs with aromatic 

 roots. Leaves 2-ternate, with the leaflets ovate, toothed or serrate. Umbels 

 opposite the leaves. Involucre and iuvolucel 2 - 5-leaved. Flowers white. 



1. O. brevistylis, DC. Styles very short, conical; fruit somewhat 

 tapering at the apex. -^ Mountains of North Carolina ;uid northward. June. 

 — riant hairy, 1°-1^° high. Leaflets thin, acuminate, pinuatitid. 



2. O. longistylis, DC. Stem 1° high, from a sweet anise-scented root; 

 leaves mostly 3, the leaflets thin, ovate, lubed and toothed, the lowest long- 

 petioled ; umbel and its 3 rays long and slender ; styles nearly as long as the 

 ovary ; fruit mostly curved. — Shaded river banks. North Georgia, and north- 

 ward. April. 



26. EULOPHUS, Nutt. 



Calyx 5-toothed. Fruit ovate, laterally contracted, indistinctly ribbed. 

 VittiE large, numerous, Mith 4 on the concave face. — A tall (3° -4°) glabrous 

 perennial, with biternately divided leave-s, and long-stalked many-rayed um- 

 bels of white flowers. Involucre 1-2-leaved. Involucel many-leaved. 



1. E. Americanus, Nutt. — Tennessee, and westward. 



27. ERIGEWIA, Nutt. 

 Calyx teeth obsolete. Petals obovate. Fruit didymous, the carpels kidney- 

 shaped, incurved at each end, with 5 slender ribs ; intervals with several 

 vitta3. — A low (6'- 10' high) smooth herb from a deep round tuber; the 

 simple stem bearing 2 - 3-ternately finely dissected leaves, and a small leafy- 

 bracted compound umbel of white flowers. 



1. E. bulbosa, Nutt. — Mountains of Georgia and Tennessee. April. 



28. CORIANDRUM, Hoff. Coriander. 



Calyx 5-toothed. Fruit gioljose, 10-ribbed, the primary ribs inconspicuous, 

 flexuous, without vittae. — Chiefly annual herbs, with bipinnately divided 

 leaves and white flowers. 



1. C. sativum, L. Glabrous, 2° high ; divisions of the leaves linear; 

 umbel spreading. — Waste ground. Introduced. 



Order 68. ARALIACEiE. (Gixsexg Family.) 



Umbellifei'ous herbs, shrubs, or trees, nearly as in the last order ; 

 but the flowers (chiefly polygamous) with flat and .spreading petals, 

 the .styles and carpels of the baccate fruit usually more than two, 

 and tlie embryo at the apex of copious fleshy albumen. 



1. ARALIA, L. Sarsaparilla. 

 Calyx teeth 5, or none. Petals, stamens, and spreading styles 5. Berry 

 drupaceous, 5-lobed, .5-celled. — Herbs or shrul)s. Leaves compound. Umbels 

 corymbed or panicled. Flowers whitish. Berry black. 



