Utricularia intermedia s.l.
Perennial, insectivorous herbs, most frequent in shallow, oligotrophic water in acidic and peaty sites, though also occurring in calcareous sites. They rarely flower, and reproduction is mainly by turions. 0?650 m (Loch Achlarich, Mid Perth).
A poorly-known complex of three species, U. intermedia sens. str., U. ochroleuca and U. stygia, for which there are rather few reliable records. The aggregate has declined, especially in the southern part of its range, due to habitat destruction and eutrophication. It is, however, much better recorded in Scotland and Ireland than in the 1962 Atlas.
Circumpolar Boreal-montane element.
Atlas Change Index: 0.4
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.