During the last five+ years, researchers on fern phylogeny have treated Azolla as a species in the Salviniaceae. For example: Botanical Journal of the Linnean Society, 2008, 157, 673–685. With 2 figures. Can some fern person please persuade EoL to make the change - or justify not doing so?
A. pinnata R. Br is also found in Perth and other areas in the South West of Western Australia http://florabase.calm.wa.gov.au/browse/profile/17737
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