This genus comprises flowering trees, shrubs, and woody vines characterized by their diverse green, feather-like leaves, which may be smooth, serrated, or lobed. Members of this genus contain 'urushiol' oil, known to cause skin irritation.

Toxicodendron

Toxicodendron delavayi

Toxicodendron diversilobum

Toxicodendron orientale is a deciduous climbing shrub or woody vine characterized by its oval to elliptic green leaves, which grow in clusters of three. In spring, it produces pale yellow-green flowers that emerge from the leaf axils, followed by round, pale yellow berries. In autumn, the leaves transition to red before they drop.

Toxicodendron orientale

Toxicodendron orientale large-leaved

Toxicodendron radicans

Toxicodendron radicans var. rydbergii

Toxicodendron succedaneum is a compact deciduous tree that typically reaches heights of 2 to 5 meters, with some specimens growing as tall as 8 meters. Its leaves are pinnately compound, featuring as many as 15 shiny dark green leaflets that transform to vivid red shades in the fall. In summer, the tree produces erect, conical clusters of small yellow-green flowers, which are succeeded by round, yellow-brown seeds on female specimens.

Toxicodendron succedaneum

Toxicodendron sylvestre is a deciduous tree that can reach heights of up to 10 meters. Its young branches are adorned with yellow-brown, woolly hairs. The leaves are pinnate, consisting of as many as 15 oval to elliptical leaflets, which display a vivid red color in the fall. In spring, the tree produces upright clusters of small yellow flowers, also covered with rust-colored woolly hairs.

Toxicodendron sylvestre

Toxicodendron trichocarpum is a sizable shrub or diminutive tree that can reach heights of 6 meters, characterized by its broad growth form and young branches that display a coating of yellow-brown hairs. The leaves are pinnate, consisting of up to 15 downy green leaflets; these start off with a pink and copper hue before maturing to a deep orange in the fall. In summer, this species produces upright clusters of small yellow flowers, also covered in yellow-brown hairs. Female plants subsequently bear small, spiky yellowish fruits.

Toxicodendron trichocarpum

Toxicodendron vernicifluum is a deciduous tree that can reach heights of up to 15 meters. It features a broad growth pattern, and its young stems are covered in yellow-brown pubescence. The leaves are pinnate, consisting of as many as 13 glossy green leaflets, which change to red and yellow hues in the fall. In summer, small yellow flowers emerge in drooping clusters, and female specimens will bear round, pale yellow fruits afterward.