Henbane
Henbane is a poisonous plant in the nightshade family, usually referring to *Hyoscyamus niger* (black henbane).
Henbane is a poisonous plant in the nightshade family, usually referring to *Hyoscyamus niger* (black henbane). It is known for its strong smell, toxic tropane alkaloids, and historical use in traditional medicine. The species is native to Eurasia and has become naturalized or invasive in parts of the world, including North America.
Taxonomy and naming
Henbane is commonly identified as *Hyoscyamus niger*, a member of the genus *Hyoscyamus* in the Solanaceae family. Common names include black henbane and stinking nightshade.
Description
Sources describe henbane as a hairy, sticky plant with foul odour and pale yellow flowers marked with darker veins or centres. It is typically a biennial plant, though annual and biennial forms are reported.
Distribution and habitat
Henbane is native to Europe and parts of Asia or Siberia, and is now naturalized in many regions worldwide. In North America it is often treated as an invasive or noxious weed of disturbed ground, roadsides, and pastures.
Toxicity and chemistry
Henbane contains toxic tropane alkaloids, especially hyoscyamine and scopolamine, and also atropine in medicinal preparations. These compounds account for both its poisonings and its historical pharmaceutical uses.
Uses and historical significance
Henbane has been used in traditional medicine for sedative, antispasmodic, and other purposes, but modern sources emphasize that it is highly dangerous and should not be used casually. Historical and modern medicinal use has focused on extracted alkaloids rather than raw plant material.
Key facts
- Henbane most often refers to *Hyoscyamus niger*, a highly toxic nightshade plant.
- All parts of the plant are poisonous, and ingestion can be fatal.
- The plant contains tropane alkaloids such as hyoscyamine and scopolamine.
- It has a strong, unpleasant smell and sticky, hairy growth habit.
- Henbane has a long history of medicinal and ritual use, but it is dangerous without medical supervision.
Henbane is relevant to Canadian readers as a poisonous plant of the nightshade family that can appear in disturbed sites, gardens, and waste ground; Canadian-style field guides and herb sources also note its presence in Canada. It is important for plant identification, invasive species awareness, and poison safety.[11]
Frequently asked questions
What is henbane?
Is henbane the same as black henbane?
Why is henbane dangerous?
Where does henbane grow?
Was henbane used as medicine?
Is henbane considered invasive?
References
- Wikipedia — https://en.wikipedia.org/wiki/Hyoscyamus_nigerSupports: Common name henbane, scientific name *Hyoscyamus niger*, native range, and naturalization.
- United States Forest Service — https://www.fs.usda.gov/wildflowers/ethnobotany/Mind_and_Spirit/henbane.shtmlSupports: Genus size and presence of tropane alkaloids such as scopolamine and hyoscyamine.
- Encyclopaedia Britannica — https://www.britannica.com/plant/henbaneSupports: Highly toxic nightshade species, native range, alkaloids, and fatality risk if eaten.
- First Nature — https://www.first-nature.com/flowers/hyoscyamus-niger.phpSupports: Physical description, common names, and poisonous nature.
- Montana State University Extension — https://www.montana.edu/extension/invasiveplants/documents/publications/extension_publications/black_henbane.pdfSupports: Invasive weed status in North America and introduction history.
- Medicinal Herb Info — https://www.medicinalherbinfo.org/000Herbs2016/1herbs/henbane/Supports: Poisonous nature, morphology, occurrence in Canada, and historical medicinal use.
- PubMed Central — https://pmc.ncbi.nlm.nih.gov/articles/PMC4224707/Supports: Historical medicinal use and toxic alkaloids, with pharmacological effects.