Fyning Moor is a biological Site of Special Scientific Interest south of Fyning in West Sussex.

This is a base-rich and springline alder wood, which is a nationally uncommon woodland type. Open rides have diverse flora and there are fens on the margins of a river. There are three nationally uncommon fly species, Xylota abiens, Ctenophora bimaculata and Rhobdomastix hilaris.

The site is private land but it is crossed by footpaths.

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