The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.
Range & Status
Found on Marsh Pennywort Hydrocotyle vulgaris in bogs, ponds and damp areas. Several collections were made in the late nineteenth and early twentieth century from east Norfolk and south Essex. Apparently now rarely seen, the last collection being from north Devon in 1960. The last Cornish record was from Perranporth in 1952. The host plant is exceedingly common in Cornwall and this rust should be looked for once again.
I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.
The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.