Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Flora of Cornwall (1999)

The descriptive text, below the map, is from the Flora of Cornwall (1999), which was a Tetrad Atlas (the maps had 2km square dots or Tetrads). The map on this web page depicts the plant's distribution at the 1km square scale and shows the records made pre-2000 which were used in the 1999 Flora and those made since.

Lemna minuta - Least Duckweed

Least Duckweed is spreading rapidly in Cornwall, and wherever it takes hold it often smothers the surface of ponds and pools. Where it grows with L. minor , it seems to outcompete it. Sites include Tehidy Country Park (SW64L, 1993, C.N.French), Penjerrick (SW73V, 1997, R.J.Murphy), Galowras Mill (SX04B, 1998, I.J.Bennallick), Tregorrick (SX05A, 1997, M.Atkinson) and Higher Moors on the Isles of Scilly (SV91F, 1995, C.N.French).

Click here to see Aphotoflora images by David Fenwick


French, C.N., Murphy, R.J. & Atkinson, M. 1999. Flora of Cornwall. Wheal Seton Press, Camborne.