sentences:  The flowers are 2–3 cm in diameter, with five white petals, and are produced in erect panicles 10–20 cm long in mid spring.The fruit is an oval leathery capsule 5–6 cm diameter, which splits into three sections at maturity to release the 6–18 seeds; the seeds are black, 1.5 cm in diameter, resembling a small horse chestnut seed.The genus name "Xanthoceras" (which translates as "yellow horn") is considered to be the most basal member of the family Sapindaceae.