Leaf differences: Tartary buckwheat tea leaves are broadly obovate, oblong or broadly linear, with serrated edges; Kuding tea leaves are thick leathery, with sparse teeth on the edges, and are yellow-green. Flower differences: Tartary buckwheat tea has racemes, yellow flowers, and obovate petals; Kuding tea flowers are dioecious, and the flowers are white or yellow.

1. Differences in leaves

The basal leaves of tartary buckwheat tea are wide and obovate, 23 to 25 cm long and 18 to 20 cm wide. The top is blunt, the base is wedge-shaped, and the edges are large and small. Teeth unequal or heavily serrated, petioles up to 20 cm long, with small lobes. The stem leaves in the middle are oblong, 3 to 4 cm long, have several teeth on the edges, and are sessile. The leaves on the upper part of the stem are broadly linear, gradually narrowing at the base, and the leaves are entire.

The leaves of Kudingcha are thick leathery, spiral and alternate, 8 to 25 cm long, 4.5 to 8.5 cm wide, with sparse and sharp teeth on the edges, and no villi on both sides. The leaves are oval and oblong, not wrinkled, and some are slightly curled vertically. They are yellow-green or gray-green above, shiny, and yellow-green below.

2. Flower differences

Tartary buckwheat tea racemes, yellow flowers, 6 to 8 mm in diameter, and obovate petals.

The flowers of Kudingcha are dioecious, or unisexual and bisexual flowers coexist, and the flowers are white or yellow.