Castanea seguinii, Seguin chestnut, Seguin's chestnut, or Chinese chinquapin (a name it shares with Castanea henryi), and in Chinese: 茅栗, mao li, is a species of chestnut native to south-central and southeast China. A shrub or small tree, its nuts are quite small, but are edible and occasionally consumed by locals. Another use in China is as a trap crop for Dryocosmus kuriphilus gall wasps. By planting a hedge of C. seguinii around C. mollissima (Chinese chestnut) orchards, the wasps will first encounter ...