Ivies, Poison

Ivy, Poison

Oak, Poison

Oaks, Poison

Poison Ivies

Poison Ivy

Poison Oak

Poison Oaks

Poison Sumac

Poison Sumacs

Rhus toxicodendron

Rhus toxicodendrons

Sumac, Poison

Sumacs, Poison


toxicodendron, Rhus

A genus (formerly part of Rhus genus) of shrubs, vines, or trees that yields a highly allergenic oleoresin which causes a severe contact dermatitis (DERMATITIS, TOXICODENDRON). The most toxic species are Toxicodendron vernix (poison sumac), T. diversilobum (poison oak), and T. radicans (poison ivy). T. vernicifera yields a useful varnish from which certain enzymes (laccases) are obtained.