Oaks (Quercus spp.) parasitised by mistletoe Viscum album (Santalaceae) in Britain
Keywords:Mistletoe; parasitism; pedunculate oak; pin oak; red oak; scarlet oak; sessile oak
Information on oaks Quercus spp. parasitised by Viscum album L. in Britain that was obtained in a comprehensive review of the literature and records with site visits from 1996 to 1998 has been updated during 2017 and 2018. Currently there are thirteen confirmed mistletoe-oaks in Britain. V. album parasitising Quercus spp. mainly occurs at locations in and around Herefordshire in the core of the current and past distribution of V. album in Britain. The results of this recent survey accord with the earlier review and with reports in the 19th and early 20th centuries suggesting that the population of between ten and twenty Quercus trees parasitised by V. album in Britain appears to be relatively stable over time with some losses of host trees and gains from the parasitism of new trees. Quercus robur L. is the most frequent host amongst the existing mistletoe-oaks which also include ‘red oaks’ (Q. rubra L., Q. coccinea Münchh. and Q. palustris Münchh.). The estimated ages of the existing Quercus hosts range from 30 to 400 years. The mistletoe-oaks are located in woodland, woodland edges, hedges, parkland, a garden, a churchyard and open countryside by a watercourse.
Copyright and licence: Authors (or their employers) retain their copyright in articles and images published in British & Irish Botany and are not required to assign this to the Botanical Society of Britain & Ireland (BSBI). All that BSBI requires from authors is a license to publish the article in British & Irish Botany and make it freely available to all in pdf format under the terms of Creative Commons Attribution 4.0 International Public License, which also enables BSBI to reproduce components of the article in other BSBI outputs (eg. BSBI News, the BSBI website and/or the BSBI News & Views blog) for publicity purposes. The licence code can be accessed here: