Some years ago I wrote an account for the BSBI Plant Crib on how to distinguish the three Drosera species that occur naturally in the UK, and around most of the northern hemisphere. There still remains confusion among them and mis-reporting of the species. Drosera is very easy to recognise as a genus but many of the species can be more challenging to distinguish when not in flower. The confusion is made worse by mis-labelled images on the web, some from commercial photo galleries. A blog by Ryanne Matthias on Catalogue of Life discusses this issue in some detail.
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