File:Leaf galls on crack willow - geograph.org.uk - 1449425.jpg
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Summary
| Description |
English: Leaf galls on crack willow. These reddish swellings on crack willow (Salix fragilis) are galls, produced by the sawfly species Pontania proxima (several Pontania species occur on willows and sallows, so, as usual, a vital first step is to identify the host plant). Sawfly larvae develop within the swellings.
[The identification of the gall is based on the keys in the handbook "British Plant Galls" (2002). The taxonomy of gall-causers on willows is, at the time of submission, still in flux. When appropriate, I will update this item to include any change to the name of the species.] The tree on which the galls occurred was in this area: 1449370. |
| Date | |
| Source | From geograph.org.uk |
| Author | Lairich Rig |
| Attribution (required by the license) | Lairich Rig / Leaf galls on crack willow / |
| 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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_heading:112.00&language=en){kind=link}
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 | 02:21, 2 March 2011 | | 480 × 640 (107 KB) | GeographBot | == {{int:filedesc}} == {{Information |description={{en|1=Leaf galls on crack willow These reddish swellings on crack willow (Salix fragilis) are galls, produced by the sawfly species Pontania proxima (several Pontania species occur on willows and sallows, |
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