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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.

Schoenoplectus triqueter - Triangular Club-rush



Red Data Book, Triangular Club-rush is now considered to be extinct at its sole Cornish station on the Tamar near Calstock (SX47J) where it has not been seen since 1958. It is, however, present on the Devon side of the Tamar river.

Source:

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