1、 Family and genus

Black peel yellow peel fruit is a plant of Rutaceae, citrus subfamily and yellow peel genus

2、 Morphological characteristics

Tree body: Black peel and yellow peel fruit belong to small trees or shrubs, with a height of about 5-10 meters, and the branchlets are usually not hairy

Leaves: Black peel yellow peel fruit has odd pinnate compound leaves, about 16-30 cm in length, and 5-13 leaflets. The leaves are oval lanceolate to lanceolate in shape, thick paper in texture, and sharp or acuminate or caudate at the top of the leaves. The leaves of black peel yellow peel fruit are asymmetric on both sides, the surface is dark green, glabrous, the back of the leaves is light green, and the leaf margin has obvious circular sawtooth

Flowers: the cymose panicles of black and yellow fruits are axillary, the flowers are white to light yellow, the sepals are oval triangular, the number of petals is 4-5, and the petals are oval

Fruit: the fruit of black and yellow peel fruit is nearly spherical, the color is black to blue black, and the fruit diameter is about 8-12 mm

Seeds: there are 1-2 seeds in the fruit. The seed shape is oblong and the seed coat is membranous

3、 Growth environment

Black peel and yellow peel fruit mainly grow in mixed forest margins and limestone shrubs at an altitude of 290-1600 meters, and grow well in these environments

4、 Distribution range

Black and yellow peel fruits are mainly distributed in Guizhou, Guangxi, Guangdong, Hunan, Yunnan, Sichuan and other places in China, and mainly in Vietnam abroad