File:Galls beside midrib of alder leaf - geograph.org.uk - 957964.jpg
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Captions
Captions
Leaf galls on common alder
Summary
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| Description |
English: Galls beside midrib of alder leaf. Two kinds of leaf gall were present in abundance on the native alder trees (Alnus glutinosa) in this area; both kinds could often be found on the same tree.
Those shown in this photo are caused by the gall mite species Eriophyes inangulis; as the specific part of that name suggests, they grow in the angles between the midrib of the leaf and the side veins. They are about 5 mm long, and, as can be seen, are elongated in the direction of the midrib. On the underside of the leaf, the openings of the galls are quite prominent; they are fringed with brown hairs. The other variety of gall that was present on these trees is shown here: 957963. |
| Date | |
| Source | From geograph.org.uk |
| Author | Lairich Rig |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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Licensing
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Lairich Rig and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Lairich Rig
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:21, 22 February 2011 | | 640 × 640 (96 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Galls beside midrib of alder leaf Two kinds of leaf gall were present in abundance on the native alder trees (Alnus glutinosa) in this area; both kinds could often be found on the same tree. Thos |
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