Rhus glabra. SMOOTH SUMAC. Shrub. Yavapai, Coconino, Navajo, and Apache counties, 5000-8000 feet [McD].
Rhus ovata. SUGAR SUMAC. SUGARBUSH. Shrub or small tree. Mohave, Yavapai, and Coconino counties, 3000-5000 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25]. Along state highway 96 at ca. 2700 feet elevation, Yavapai County [LD].
Rhus trilobata (=Rhus aromatica var. trilobata). SKUNKBUSH. SKUNKBUSH SUMAC. Shrub. Throughout region at 2500-7500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25, R. aromatica var. trilobata]
Rhus trilobata var. simplicifolia. SKUNKBUSH SUMAC. Shrub.
Toxicodendron rydbergii (=Rhus radicans var. rydbergii). WESTERN POISON-IVY. Shrub or vine. Throughout region at 3000-8000 feet [McD].
