Page author: David Giblin
Hyoscyamus niger
hog's bean, black henbane

Distribution: Scattered localities on both sides of the Cascades in Washington; widely distributed throughout uNorth America from Alberta to Nevada, east to central and northeastern North America.

Habitat: Roadsides and waste places.

Flowers: May-August

Origin: Introduced from Europe

Growth Duration: Annual

Conservation Status: Not of concern


Coarse, poisonous, fetid biennial or annual up to 1 m. tall, with soft, sticky hairs throughout, but especially on the stem.


Leaves large, sessile, 5-20 cm. long and 2-14 cm. wide, with coarse, unequal, triangular lobes.


Inflorescence a terminal, one-sided, leafy-bracteate raceme; calyx urn-shaped, 2.5 cm. long, 5-toothed, with a network of veins, dry, persistent, enclosing the fruit; corolla pale greenish-yellow with a network of purple veins, funnel-shaped, 2.5-4.5 cm. long, the limb oblique, 5-lobed, 2.5-4.5 cm. wide; stamens 5, exerted, attached to the corolla tube alternate with the lobes; style solitary; ovary superior.


Capsule 2-celled, 1-1.5 cm. long, with a thickened lid.

Accepted Name:
Hyoscyamus niger L.
Publication: Sp. Pl. 1: 179-180. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Hyoscyamus niger in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Hyoscyamus niger checklist entry.

E-Flora BC: Hyoscyamus niger atlas page.

CalPhotos: Hyoscyamus niger photos.

USDA Plants: Hyoscyamus niger information.

20 photographs:
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