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File:A lichen - Parmelia ernstiae - geograph.org.uk - 1213636.jpg

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Summary

Description
English: A lichen - Parmelia ernstiae. In most respects, this lichen resembles 1184056, but is rarer; like P. saxatilis, it has a network of pale lines on its lobes, and isidia (see the item just cited) are present. However, the centre of this lichen is densely covered in small lobules, a distinctive feature of this species. The tree on which this lichen is growing supported a much richer flora than its near neighbour. In a given area, the number of lichen species found on a tree depends to a large extent on the texture of its bark; most species are better able to establish themselves on rough bark (although there are a few species that favour a smooth surface). Another important factor is the pH of the bark, which can vary greatly between different tree species.
Date
Source From geograph.org.uk
Author Lairich Rig
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Lairich Rig / A lichen - Parmelia ernstiae / 
Lairich Rig / A lichen - Parmelia ernstiae
Camera location55° 57′ 26.8″ N, 4° 31′ 17″ W  Heading=90° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo
Object location55° 57′ 26.8″ N, 4° 31′ 17″ W  Heading=90° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Attribution: Lairich Rig
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17 March 2009

55°57'26.78"N, 4°31'16.68"W

heading: 90 degree

55°57'26.78"N, 4°31'16.68"W

heading: 90 degree

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1a5567f6545b4108cb8ed331586cb0a9141b0a7f

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Date/TimeThumbnailDimensionsUserComment
current05:54, 26 February 2011Thumbnail for version as of 05:54, 26 February 2011640 × 480 (150 KB)GeographBot== {{int:filedesc}} == {{Information |description={{en|1=A lichen - Parmelia ernstiae In most respects, this lichen resembles 1184056, but is rarer; like P. saxatilis, it has a network of pale lines on its lobes, and isidia (see the item just cited) a
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