1、 Difference between blades

The leaves of mailan are ovate lanceolate or lanceolate, 3-9 cm long and 1.5-4 cm wide. The base is round or close to heart-shaped, and the top is acute. The leaves of Mantianxing are lanceolate or linear lanceolate, about 2-5cm long and 2.5-7mm wide. The midvein is obvious and the top is acuminate

2、 The difference between petals

It is corymbose, with thin pedicel, lanceolate bracts and oval conical calyx. In the later stage, it will grow into a sphere, with small calyx teeth, triangular shape, sharp top and light red petals. The full sky star is a paniculate cyme with many branches, small and many flowers, triangular bracts, wide bell calyx, oval calyx teeth, round and blunt, and white or light red petals

3、 Fruit difference

The fruit of Wheatgrass is wide ovate or nearly round, the color is reddish brown to black, and the fruit period is from June to August. The fruit of Mantianxing is spherical and reddish brown. The fruit period is from August to September