Pepper oil

Zanthoxylum bungeanum (scientific name: Zanthoxylum bungeanum Maxim.) is a small deciduous tree in the Rutaceae family, genus Zanthoxylum, reaching up to 7 meters in height. The stems bear thorns, the branches have short spines, and the current year's branches are covered with short soft hairs. The leaf axis often has very narrow leaf wings; the leaflets are opposite, ovate, elliptical, rarely lanceolate, with fine serrations along the leaf margins, and oil dots in the serration gaps. The leaf backs are covered with soft hairs and exhibit reddish-brown patterns when dry. The inflorescences are terminal or located at the tips of lateral branches, with yellowish-green perianth segments that are similar in shape and size; the style curves obliquely backward. The fruit is purplish-red, scattered with slightly raised oil dots. The flowering period is from April to May, and the fruiting period is from August to September or October.