Toxicondron P. Mill
The name Poison Oak is often applied to the shrub-like forms of Poison Ivy. Poison Oak of the southeastern United States has its leaves divided into three leaflets; the leaflets are densely haired and generally have three to seven distinct lobes. The white, berry-like fruits are also somewhat hairy. Poison oak contains poisonous substances that are believed to be identical or closely related to that found in Poison Ivy.