Lichen - Parmotrema perlatum
Family - Parmeliaceae
Also known as - Black–edged Leaf Lichen
Previously known as - P. chinense

Lichen - Parmotrema perlatum, click for a larger image
Picture ©2010 Fay Newbury
University of Reading
Click photo for a larger image

Many thanks to Fay Newbury at Reading University for the identification of this Lichen species – Parmotrema perlatum.

A relatively large, foliose species with smooth thallus, pearl–grey when dry, more greenish when damp, with very short, inconspicuous and often sparse, black, marginal cilia, underside black, with simple rhizines and a bare, tan–coloured zone towards the margin, soralia well delimited, marginal.

A widespread species growing on bark, frequently on Hawthorn or silica–rich rocks, to about 15cm (6in) in size, common in much of western and southern Britain, where until recently, it was largely absent from central and eastern England as a result of sulphur dioxide pollution, now rapidly recolonising these areas as pollution levels have dropped.

Basic species description for Lichens, other Lichen species in Brickfields Park.

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