ST9723 : Lichen on the gravestones, St Mary's Churchyard

taken 6 years ago, near to Alvediston, Wiltshire, Great Britain

Lichen on the gravestones, St Mary's Churchyard
Lichen on the gravestones, St Mary's Churchyard
Lichens do not have roots, but absorb water and gases through their upper surface, and are therefore sensitive to atmospheric pollution. For this reason they are rarely found around cities and grow best on the wetter west side of the British Isles. Those on trees thrive best on the sunny, south-west aspects of trunks and branches. Disappearance of lichen species can be used to detect rising levels of air pollution.

There are three main types. The encrusting forms, including the bright orange/dark yellow 'Xanthoria' grow on roofs, walls, gravestones, signs and tree trunks. Leaf-like species develop flat lobes spreading over bark or stones, and shrubby forms which grow vertically from the ground or hang from trees. Few have common names.
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ST9723, 98 images   (more nearby )
Photographer
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Date Taken
Saturday, 11 February, 2012   (more nearby)
Submitted
Saturday, 11 February, 2012
Geographical Context
Village, Rural settlement  Religious sites 
Place (from Tags)
Alvediston 
Subject Location
OSGB36: geotagged! ST 9768 2394 [10m precision]
WGS84: 51:0.8900N 2:2.0668W
Camera Location
OSGB36: geotagged! ST 9768 2394
View Direction
East-southeast (about 112 degrees)
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Other Tags
Church  Gravestones  Lichen 

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Image classification(about): Geograph
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