Ginseng Américain

Panax quinquefolius L. Sp. PI. 1058. 1753
Panax quinquefolium var. americanum Raf. Med. Fl. 2: 52. 1830.
Panax quinquefolium var. citneatum Raf. Med. Fl. 2: 52, as syn. 1830.
Panax quinquefolium var. obovatum Raf. Med. Fl. 2: 52. 1830.
Panax obovalum Raf. Herb. Raf. 68. 1833. (Nomen nudum.)
Panax cuneatum Raf. Act. Soc. Linn. Bordeaux 6: 286. 1834.
Panax americanum Raf. New Fl. 4: 58. 1838.
Panax americanum var. obovatum Raf. New Fl. 4: 58. 1838.
Panax americanum var. elatum Raf. New Fl. 4: 58. 1838.
Aralia quinquefolia Dec. & Planch. Rev. Hortic. IV. 3: 105. 1S54.
Ginseng quinquefolium Wood, Bot. & Fl. 142. 1870.
Herb, up to 1 m. high or more; rootstock fusiform, up to 2 cm. in diameter; stem straight, slender, subterete, often striate; leaves 3 or 4, 5 (3-7)-foliolate, the petiole slender, up to 10 (rarely to 15) cm. long, the leaflets thin, elliptic to obovate, up to 16 cm. long and 8.5 cm. broad (the basal ones smaller, often ovate), acute to rounded at the base, acuminate at the apex, conspicuously and often doubly serrate, the teeth deltoid, acute, the petiolules up to 4.5 cm. long, the principal veins slightly raised on both surfaces, the lateral veins 5-9, ascending; peduncle slender, straight, up to 10 (rarely to 30) cm. long, the bractlets deltoid to lanceolate, acute, 2-5 mm. long; pedicels 15-40 per umbel, up to 12 mm. long, swollen distally; calyx
* Although Panax was used as neuter by Linnaeus, it is classically masculine, and therefore, according to the International Rules of Botanical Nomenclature (ed. 3. Art. 72 [2]. 1935), Panax and all modern compounds ending in -panax should be treated as masculine. This is one of the