| Toxicodendron orientale | |
|---|---|
| |
| Fukushima Prefecture, Japan | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Sapindales |
| Family: | Anacardiaceae |
| Genus: | Toxicodendron |
| Species: | T. orientale |
| Binomial name | |
| Toxicodendron orientale Greene | |
Toxicodendron orientale (Asian poison ivy) is an East Asian flowering plant in the genus Toxicodendron. It is a poison ivy, which can cause urushiol-induced contact dermatitis.
Description
Toxicodendron orientale is a climbing vine that grows on trees or other supports. The deciduous leaves of T. orientale are trifoliate and grow to be 3–10 centimetres (1+1⁄4–4 in) in length. Young branches are covered with small brown hairs that turn into red lenticels as the branches mature.
T. orientale flowers from May to June. The small yellow-green flowers grow in groups from the leaf axils. From August to September, the flowers mature into yellow-brown fruit.
Examples from Fukushima Prefecture-
Branch underside
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Male flowers
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Female flowers
Taxonomy
The species was first characterized and named by Edward Lee Greene in 1905.
Distribution and habitat
It is known to grow in Sakhalin, Japan, Taiwan, South central China, and South Korea. It was introduced to parts of Uzbekistan.
Toxicity
All parts of Toxicodendron orientale contain urushiol, which is known to cause severe contact dermatitis.
References
- Greene, Edward L. (1905), Leaflets of Botanical Observation and Criticism, vol. 1, Washington, D.C., p. 127, retrieved November 4, 2022
{{citation}}: CS1 maint: location missing publisher (link) - "Toxicodendron orientale". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 4 November 2022.
- "Urushiol". PubChem. US National Library of Medicine. 1 January 2022. Retrieved 4 January 2022.