Rhus verniciflua has alternate leaves, pinnately compound leaves, ovate or elliptic leaflets, panicles, small yellow-green flowers and flat fruits. The vertical distribution is generally between100 ~ 2,500m, with the maximum distribution of 400 ~ 2,000m. The sap of sumac is raw lacquer; Lacquer seeds can extract valuable lacquer oil; Wood is an excellent material with moderate hardness and beautiful texture; Dry lacquer, lacquer leaves and lacquer flowers can all be used as medicine. Therefore, lacquer tree is a multi-purpose economic tree with the whole body as treasure, so it is called "national treasure".
Erythrina is a deciduous tree of Erythrina in Leguminosae. Up to 20 meters. Bark is grayish brown, with obvious leaf scars and short conical black thorns on the branches, and the pith is loose, and the decayed part becomes hollow. A pinnate compound leaf has 3 leaflets and is usually densely branched.