|IPA Factsheet - Stokenham|
Site Description The site comprises a row of mature trees and an adjacent boundary wall which together support an exceptionally rich lichen flora which includes several nationally rare species. Over 50 species of lichen have been recorded growing on the mature Sycamore Acer pseudoplatanus trees including the rare Physcia clementei, P. tribacioides and Teloschistes flavicans. Another notable component of the flora is Anaptychia ciliaris which is growing here close to the western limit of its British distribution. The adjacent stone wall is almost entirely dominated by Nephroma laevigatum, this being the largest colony of this species in South West England.
Botanical Significance Lichens interest. A row of mature trees hosting over 50 epiphytic lichen species. Physcia clementei, P. tribacioides and Teloschistes flavicans, Anaptychia ciliaris, Nephroma laevigatum
General Habitat Description Lines of trees, small anthropogenic woodlands, recently felled woodland, early-stage woodland and coppice: wayside trees
Conservation Issues Although replacement Sycamore trees have been planted on the site to replace aging trees these will not be mature enough for colonisation before the old trees die. Hence there is likely to be a time with no Teloschistes flavicans. However, T. flavicans is colonising the surrounding area so a recolonisation is possible in the future. Physcia tribacioides is only on the Sycamore in the SSSI and therefore is of greater chance of being lost when the mature trees die. The wall still supports all the lichens previously recorded in 1997; Nephroma laevigatum and Sticta fuliginosa. It has been recorded as unfavourable declining only because there is a need for works to stabilize parts of the wall and to remove ivy. This problem was also highlighted in a survey of the SSSI by a lichen expert in March 2005. Ony a relatively small amount of management is needed.