1、 Blade difference

Oxalis sorrel is a basal leaf with a thin petiole, about 7-10 cm long, with joints at the base. The leaflets are obovate or wide obovate, about 1.5-2 cm long and 2.5-3 cm wide. The apex is blunt, the base is wide wedge, the surface is smooth and glabrous, and the back is sparsely pilose

Oxalis is divided into basal leaves and leaves on the stem, and the leaves on the stem are alternate. The leaflets are obcordate, smaller than the former, about 4-16MM long and 4-22mm wide, with pilose on both sides

2、 The difference between flowers

Oxalis sorrel is an umbrella inflorescence, basal or near basal, obviously longer than the leaves, and the color of the petals is purplish red, in a wide obovate shape

Sorrel flowers are solitary or several, clustered into umbels, axillary, as long as leaves. The petals are yellow, oblong and obovate