||Photographed growing side-by-side. Iris Ivy (Hedera hibernica), on the right, has larger, rather 3-D leaves with stellate hairs which lie almost flat on the lower leaf-surface. It is tetraploid and has a westerly distribution as a native, but is also found in urban situations as it is commonly grown for ground cover. English Ivy (H.helix) has flatter, darker green leaves with stellate hairs that stick out from the leaves, looking more like a star-burst. It is diploid and is common over much of the country. You need a good hand-lens to see the hairs, which are mainly seen on new growth.