1、 Blade difference

The leaves of Toona sinensis are odd pinnate compound leaves, with 13-27 leaflets, opposite or near opposite, paper, oval lanceolate, with long acuminate apex and slightly skewed base, truncated or slightly round, with 1-2 coarse serrations on both sides, dark green on the leaf surface and gray green on the back

The leaves of Luan tree are one or incomplete two pinnate compound leaves, with 11-18 leaflets, opposite or alternate, oval to ovate lanceolate, short tip at the apex, blunt to truncate at the base, and irregular serrations at the edge

2、 The difference between flowers

The Chinese toon tree is a panicle, with light green flowers, 5 sepals, arranged in tile shape, and 5 petals

Luan tree is a cyme with light yellow flowers and 4 petals in a linear oblong shape