English

western poison ivy leaves

Noun

western poison ivy ‎(uncountable)

1. Toxicodendron rydbergii, an ivy-like species of Toxicodendron common in the western United States, well-known for its ability to causes an itching rash and blistering for most people, through urushiol, an oil that is a skin irritant.

Coordinate terms

• (ivy-like plant producing skin irritant): Toxicodendron radicans (eastern poison ivy), Toxicodendron orientale (Asian poison ivy)