Aesculus turbinata

The Chinese horse chestnut is in the horse chestnut or Hippocastanaceae family and is native to Japan (Honshu and Hokkaido). It is a large tree growing up to 30 m tall.

• Leaves are opposite, palmately compound, resembling those of A. hippocastanum, 5–7 stalkless leaflets, but more regularly toothed and tapering more gradually at the apex. Each leaflet is 8–25 cm long and 4–6 cm across, glabrous beneath, the whole leaf up to 50 cm across, with a long petiole.
• Flowers are white to pale yellow, with red spots, in erect panicles 10–20 cm high, on a stalk half as long; flowers are produced 2–3 weeks later than those of common horse chestnut.
• Fruit is spineless but rough, broadly ovoid or pyriform, 2.5-5 cm in diameter; seed is reddish brown, globose, 2-3 cm in diameter, ripening in September.