The leaves of Hawthorn are triangular ovate or wide ovate, few of them are rhomboid ovate. The apex is short acuminate, and the base is truncated to wide cuneate. Usually, there are 3-5 pinnate deep fissures on both sides, and the lobes are ovate lanceolate or zonal. However, the leaves of crimson fruit are round or oval, the base is wedge or round, the apex is acuminate, and the color is dark green.
Hawthorn flowers are corymbs, petals are obovate or nearly round, color is white. And the petals of crimson are oval, white and red.
The fruit of hawthorn is nearly spherical or pear shaped, with dark red color. And the Sea red fruit is oblate, the color is dark red.