1、 Blade difference

The leaves of Jasminum Jasminum are opposite, with three compound leaves. The leaflets are oval or oval, and the edges are reversed. The midrib is slightly concave above and convex below. The terminal leaflets are larger, about 1-3cm long and 0.3-1.1cm wide. When it was young, it had hair on both sides. When it was old, it only had eyelashes at the leaf margin

The leaves of Forsythia suspensa are single or three lobed to three compound leaves, oval or wide oval, wider than the former, about 2-10cm long and 1.5-5cm wide, with serrated edges and no hair on both sides

2、 Corolla difference

Winter jasmine is solitary in the leaf axil of last year's branchlets. The bracts are lanceolate, oval or oval, the calyx is slightly, the Corolla is yellow, and there are 5-6 corolla tube lobes, which are oblong or oval. The flowering period is in June

Forsythia is usually solitary or 2 to several flowers in leaf axils. The Corolla is yellow, and the lobes are obovate oblong or oblong. The flowering period is from March to April