Toxicodendron Vernicifluum

The trees grow up to 20 metres tall with large leaves, each containing from 7 to 19 leaflets (most often 11–13). The sap contains the allergenic compound urushiol , which gets its name from this species' Japanese name urushi ( urushi ( 漆 ) ); "urushi" is also used in English as a collective term for all kinds of Asian lacquerware made from the sap of this and related Asian tree species, as opposed to European "lacquer" or Japanning made from other materials. Urushiol is the oil found in poison ivy that causes a rash .


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