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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.

Azolla filiculoides - Water Fern



Bodies of still, open water become smothered very rapidly by this fern. However, it is frost sensitive and can disappear just as quickly. It also occurs on the Isles of Scilly.



Click here to see Aphotoflora images by David Fenwick

Source:

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