Highgate resident in green

Lichens are symbiotic organisms, where fungi and algae work together to exploit sunlight and create glorious stains on trees and tombs. These are foliose lichens, with small, flat leaf-like structures. As lichens can occur from sea level to high mountains, they are a very familiar view. It is estimated that 6% of the Earth’s surface is covered by lichens.


Highgate resident in pink

Lichens are symbiotic organisms, where fungi and algae work together to exploit sunlight and create glorious stains on trees and stones. These are foliose lichens, with small, flat leaf-like structures. Tombs are frequently covered by lichens, and the dates on the stones have been used to date the lichens.


Yellow lichen on rock

Lichens are symbiotic organisms, where fungi and algae work together to exploit sunlight and create glorious stains on trees and tombs. These are foliose lichens, with small, flat leaf-like structures, very common in graveyards. This one lights up when the low setting sun hits it.


Highgate resident (yellow lichen on yew tree)

Lichens are symbiotic organisms, where fungi and algae work together to exploit sunlight and create glorious stains on trees and tombs. These are foliose lichens, with small, flat leaf-like structures. The marked contrast of yellow lichen on dark bark is quite common in cemeteries. They are at their best when they catch the setting sun light.