Ulmus spp. Height: up to 30 m Trunk: deeply furrowed bark Leaves: obovate to elliptical, with clear asymmetrical leaf base on stem, more or less hairy, serrated leaf margin, rustling Fruits/seeds: round to ovoid, resembling wafer-thin leaflets with a seed in the centre, in clusters Other: rare tree species, 3 species in Germany that are difficult to distinguish Photos: Martina Gehret (1,2,3,4), Wolfgang Schödel (5,6)