Evernia prunastri - Oakmoss
This lichen is commonly found growing on trees, especially Oak and flourishes in clean air environments but can tolerate low levels of pollution.
This species is used widely in the perfume industry as a `fixative` to give scent a longer life on the skin. It has antler type growth of flat forked branches pale yellow-green above and whitish below and a bushy loosely hanging form of growth.
Ramalina farinacea - Shaggy Strap Lichen
This is a bushy to pendant shaped (fruticose) Lichen with yellow-green to green-grey narrow flattened branches (1-3mm wide).
Scattered all along the branch edges are small oval to round discs (soralia) which are a helpful identifying feature. These are mainly found on trees and, when growing well, can be mat forming on tree trunks. This species can tolerate low levels of air pollution.
Usnea subfloridana – Beard lichen
A bushy shaped (fruticose) and compact lichen attached to a tree or wood by a single stem blackened at the base. It is yellow-green to grey-green in colour and much branched and adorned with clusters of minute round to oval discs (soralia).
A unique feature of this type of lichen is the stretchy white inner stem noticeable if pulled gently apart from either end. It is widespread and often common on trees and old fences where it can reach 7cm in size in good clean air conditions.
Ramalina fastigiata – Dotted Ribbon lichen
This is a tufted to erect well branched species with green (when wet) to grey irregularly flattened stems. (2-5cm high) These are always well covered with cream-coloured discs (apothia).
This is a widespread and common species, often found on well-lit tree trunks and branches.
Pseudervernia furfuracea - Antler Lichen
This is a tufted to pendant shaped species with light-grey branches the upper surface. It is often covered with small nodules ,while underneath it is black in colour, especially in older specimens.
It can be hard to spot among other lichen species, especially if present in small numbers. However, in clean air environments it grows well and can cover tree branches. It is commonly found on old gates or fence posts in upland areas.
Ramalina fraxinea - Cartilage lichen
A robust species is tufted when young but later more often pendulous with broad, sparingly divided strap-like branches grey-green to grey in colour. It commonly grows to 7cm but in suitable clean air conditions can reach 20cm often with noticeable discs (apothia) present too.
It is very sensitive to Sulphur Dioxide pollution and died out from many parts of the Country but has made a comeback in recent years and is now widespread across the National Park.
Often found on windy, exposed and well-lit sites especially on young Ash, Rowan and Sycamore trees. Find this and you’ve found some lovely clean air!