1. Smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries; yields an irritating oil
   "Hikers carefully avoided the poison dogwood in the wetland";
   - poison ash, poison sumac, Toxicodendron vernix, Rhus vernix

Derived forms: poison dogwoods

Type of: poisonous plant

Part of: genus Toxicodendron, Toxicodendron