火炬树(Rhus typhina L.)为漆树科漆树属落叶小乔木,高可达10—12米,树皮黑褐色,稍具有不规则纵裂,小枝黄褐色披黄色长茸毛。奇数羽状复叶,互生,叶长18—44厘米,小叶11—25枚,长5—12厘米,长圆形至披针形,先端渐尖,边缘具粗锯齿,基部圆形至广楔形,表面绿色,叶背苍白色,披茸毛。花单性雌雄异株,圆锥花 Rhus typhina L. (Rhus typhina L.) is a tree of Aristolochia deciduous trees, up to 10-12 meters high, dark brown bark, slightly irregular longitudinal split, twig yellowish brown hair yellow hair. Odd pinnate, alternate, leaf length 18-44 cm, leaflets 11-25, 5-12 cm long, oblong to lanceolate, apex acuminate, margin coarsely serrate, base rounded to broadly cuneate , Green surface, pale leaves, Phoebe hair. Flowers unisexual dioecious, cone-shaped flowers