Tromp, H. and Oldenburger-Ebbers, C.S. 2003. On ’English Groves’ and ’bank beds’: the field of tension between exotic and native plants. Bulletin KNOB. 102, 2 (Apr. 2003), 59–64. DOI:https://doi.org/10.7480/knob.102.2003.2.287.