Avena (scientific name: Xanthoceras sorbifolium? Bunge), Sapindaceae, Avena genus deciduous shrubs or small trees, up to 5 meters high; branchlets brownish red stout, leaves with stalks up to 30 cm long; leaflets opposite, slightly asymmetric on both sides, acuminate at the tip, cuneate at the base, the edge is sharply serrated, bisexual inflorescences terminal, male inflorescences axillary, erect, short pedicels, petals white, base purplish red or yellow, filaments glabrous; capsules up to 6 cm long; capsules, white, orange, yellow, or yellow. Inflorescences of bisexual flowers terminal, male inflorescences axillary, erect, short pedicels, petals white, base purplish-red or yellow, horny appendages of disk orange-yellow, filaments glabrous; capsule up to 6 cm long; seeds black and shiny. Flowering in spring, fruiting in early fall.