1、 Blade difference

The basal leaves of Desmodium japonicum are in rosette shape, spoon shape or inverted lanceolate spoon shape, about 5-18 cm long and 2-4 cm wide, with short tip or blunt at the top, gradually narrowing to wide and short handle at the base, serrated edges, smaller and more stem leaves, in inverted lanceolate or oblong lanceolate shape, gradually decreasing upward, and all leaves are short and rough

Gentiana biloba leaves are opposite, the lower part is scaly, the middle and upper parts are oval lanceolate, and then linear lanceolate, about 2-7 cm long and 2-3 cm wide, gradually smaller upward, the apex is acute, the base is heart-shaped or round, the edge is rolled out, hairy on the top and smooth below

2、 The difference between flowers

The ground gall is a head like inflorescence, born at the end of the stem or branch, the involucre is green or purplish red at the upper end, and the color of the flower is pink or lavender

Gentian flowers are born on the top of branches or leaf axils. The Corolla is blue-purple. Sometimes there are yellow-green spots on the throat, and the flower color is blue