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American Nightshade

Phytolacca americana L.

Comprehensive Description

provided by North American Flora
Phytolacca americana L. Sp. PI. 441. 1753
Phytolacca decandra L. Sp. PI. ed. 2. 631. 1762. Phytolacca vulgaris Crantz. Inst. 2: 484. 1766. ^Phytolacca americana lancifolia H. Walt, in Engler, Pflanzenreich 4 83 : 55. 1909.
A glabrous succulent herb, 1.5 m. or more high, with an unpleasant odor, the large perennial parsnip-like root poisonous; leaf-blades oblong-lanceolate, ovate-lanceolate, or ovate, 10-30 cm long, 3-13 cm. broad, acute or acuminate at both ends, often mucronate; petioles slender, 1-6 cm. long, grooved above; racemes pcduneled, S-30 cm. long, nodding in fruit; pedicels glabrous or puberulent, often reflexed, 6-12 mm. long, each with a subulate-lanceolate bract at its base and usually 2 similar ones above; sepals greenishwhite or pinkish, oval to suborbicular, 2.S-3.3 mm. long, 1.9-3 mm. broad; stamens 9-12, commonly 10, shorter than the sepals; filaments subulate, 2-2.5 mm. long; anthers oblong, about 1 mm. long; ovary 10-carpellary, green, the carpels connate; styles recurved; berry dark-purple, depressed, 9-1 1 mm. in diameter; seed suborbicular, 3-4 mm. long, black, shining.
Type LOCALITY: Virginia.
Distribution: Maine and Ontario to Minnesota. Texas, and Georgia; Mexico (?); Bermuda. Naturalized in Europe.
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bibliographic citation
Percy Wilson, Per Axel Rydberg. 1932. CHENOPODIALES. North American flora. vol 21(4). New York Botanical Garden, New York, NY
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