166 ARALIACEili. (ginseng FAMILY.) 



23. OSMORRHIZA, Haf. 



Calvx-tccth obsolete. Fruit clavatc, angled. Carpels with bristly ribs, fur- 

 rowed on the commissure. Vittae none. — Perennial herbs with aromatic roots. 

 Leaves 2-ternafc, with the leaflets ovate, toothed or serrate. Umbels opposite 

 the leaves. Involucre and involuccl 2 - 5-leaved. Flowers white. 



1. O. brevistylis, I^C. Styles very .'^bort, conical ; fruit somcwiiat taper- 

 ing at the apex. — Mountains of North Carolina and noitliward. June. — 

 Plant hairy, 1°-1P high. Leaflets tliin, acuminate, pinnatifid. 



Ordkr C7. ARALIACEiE. (Ginseng Family.) 



Umbelliferous 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 the embryo at 

 the apex of copious fleshy albumen. 



1. AHAXiIA, L. Sarsapaeilla. 



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

 drupaceous, 5-lobcd, 5-ccllcd. — Herbs or shrubs. Leaves compound. Umbcb 

 corj'mbcd or panicled. Flowers whitish. Berry black. 



* Stems herbaceous. 



1. A. racemosa, L. Stem smooth, leafy, widely branched ; leaves tcmately 

 decompound ; leallcts large, broadly cordate, doubly serrate ; umbels very numer- 

 ous, piHiidcd. — Ivich woods along the mountains, Georgia, and northward. 

 July. — Root thick, aromatic. Stem 3° -5° high. 



2. A. hispida, Michx. Stem leafy, somewhat shrubby at the base, bristly ; 

 leaves bipinnately compound ; leaflets lanceolate-ovate, sharply serrate ; umbels 

 in naked pcdundcd corymljs. — Mountains of North Carolina, and northward. 

 June and July. — Stem l°-2° high. 



3. A. nudicaulis, L. Stem n.aked, short, bearing 3 long-pcdunclcd um- 

 bels at the ai)ex ; leaf solitary, radical, long-pctiolcd, teniately divided, the 

 divisions quinate; leaflets .oblong-ovatc, acuminate, serrate. — MouiUains of 

 North Carolina, and northward. May. — Root long and slender, aromatic. 

 Stem 1° high, much shorter than the leaves. 



* * Steins voody. 



4. A. spinosa, L. Stem siniple, prickly ; leaves very large, crowded ot 

 the summit of the stem, bipinnately compound ; leaflets thick, ovale, crenate, 

 glaucous beneath ; umbels in very large hoary panicles. — Swam])s, Florida to 

 Mississippi, and northward. July and August. — Stem 10° - 15° high. 



2. PANAX, L. GiNSKNo. 



Calvx minutely 5-tootlicd. Petals and stamens 5. Styles 2 -.T. Berry fleshy, 

 drupaceous, 2 - 3-lobed, 2 - 3-cclled. — Low herbs, with naked stems, bearing at 



