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The Tree Lichen can be most easily found in deciduous forests and woods especially wild places like Dartmoor or Bodmin Moor
LIchens are often composed of both a photosynthetic bacteria (genome size: 2 million bases) and a fungal component (30 million bases).
In Darwinian terms you need to go back some 600 million years to find the most recent common ancestor of Lichens to Homo Sapiens on the fungal side and if the photosynthetic partner is a cyanobacterium then it will be the last common ancestor maybe 3 billion years ago!
I should be sequenced because...: To unravel the intricate symbiosis of Lichens requires the powerful combination of the offered techniques of PacBio and Illumina sequencing!
The Tree Lichen, Evernia prunastri, chosen for the 25 genomes project, can be found in many parts of the World including the United Kingdom. but particularly good specimens are confined to woodlands and Moors. They prefer to grow on bark of deciduous trees but have been found on Evergreens on occasion. The possibility of sequencing the Tree Lichen will help to develop further insights into their unique Symbiotic biology.
Lichens of bark come in other forms too as shown below (Photo taken in Sawston):-
As a comparison, many Lichens will grow on rocks of various types. Some examples are shown below. The first Lichen that resembles a Radio Telescope in shape, was taken on a tombstone in Sawston, near Cambridge UK, while the last one was from a rock in the glorious forested gorge of the Ardeche in the south of France.