Tilia spp. Height: up to 30 m Trunk: gray to black-brown bark, longitudinally fissured Leaves: heart-shaped, 3-15 cm long, angled, serrated edges (small spikes) Flowers: in June/July, strongly scented, insect-friendly Fruits/seeds: small, spherical nut fruits (approx. 5 mm) with 1 wing, stemmed Other: common urban tree Photos: Janina Deutschmann (1,2), Kerstin Ellersdorfer (3)