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Montana Field Guide

Montana Field Guides

Black Henbane - Hyoscyamus niger
Other Names:  Stinking Nightshade

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Annual or biennial. Stems erect, usually branched, 25–100 cm. Herbage viscid-villous, especially on the stems and veins, malodorous, poisonous. Leaves winged-petiolate below to sessile above; blades ovate, 3–30 cm long, pinnately lobed to dentate, overlapping. Inflorescence a branched, leafy-bracted raceme. Flowers slightly irregular; calyx campanulate, 10–12 mm long, greatly expanded in fruit; corolla funnelform, yellowish with purple veins, the tube 15–30 mm long, the limb 20–25 mm wide with 5 unequal lobes. Fruit a globose capsule 1–2 cm long, enclosed by the veiny, glandular calyx (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
Introduced throughout much of temperate North America; native to Europe (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 567

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)



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Citation for data on this website:
Black Henbane — Hyoscyamus niger.  Montana Field Guide.  .  Retrieved on , from