Aesculus hippocastanum Height: up to 25 m Trunk: gray-brown to red-brown bark, flat, striped Leaves: palmate, consisting of 5-7 individual leaves, up to 25 cm long Buds: fawn-brown, up to 3 cm long, very sticky Flowers: conspicuous, large, upright flowers in May/June Fruits/seeds: green, spherical fruits with spines, shiny chestnut seed Other: common urban tree Photos: Wolfgang Schödel (1), Janina Deutschmann (2,3)