Summary. The epiphytic vegetation on 19 pollarded ash trees, of 200-400 years of age, was investigated. Samples were made of the top, middle and base of the pollard trunks and from the four aspects. 84 lichen species were found, 72 bryophytes (54 mosses, 18 liverworts) and 17 vascular plants. Hypnum cupressiforme was the most frequent epiphyte followed by Metzgeria furcata, Frullania dilatata and Radula complanata and mosses also tended to dominant the percentage cover. The pollard trunks provided a variety of ecological niches and thus increased the opportunity for many epiphytic species to grow on the same trunk. Species diversity was greater at lower altitudes, and on the less shaded trunks, but no tree in the survey was in full sun.