1、 Blade difference

The leaves are narrow strip lanceolate, 30-80 cm long and 1-2.5 cm wide. The base is narrow into sheath shape, overlapping or reporting stem. There are serrations on the edge and back midvein. The leaves of Ophiopogon japonicus are smaller, about 25-60 cm long and 4-6 mm wide. The apex is blunt or acute. There are usually brown leaf sheaths at the base and serrated edges

2、 The difference between flowers

It is a panicle, usually growing at the upper end of the lateral branches. The pedicel is usually slightly curved, the bracts are small, and the perianth pieces are strip lanceolate, with the color of green white or light yellow to cyan purple. The flowers of Ophiopogon japonicus are usually 3-5 clusters, growing in the axils of bracts. The perianth pieces are rectangular round or rectangular round lanceolate, and the color is lavender or light blue