Forsythia koreana

Forsythia koreana, commonly called gaenari (Hangul:개나리) or Korean goldenbell tree, is a species in the olive family, Oleaceae. It grows to about 3 m. The leaves are oval in shape, have teeth, and are 3-12 cm long. The front of the leaf is dark green and the back is dark blue, but both sides are hairless.