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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.

Centaurea calcitrapa - Red Star-thistle



Red Star-thistle is of casual occurrence and may well have arrived with imported grain or bird seed at most of the scattered locations where it has been seen. It was last reported by the Lower Carnon River (SW74V) in 1983.

Source:

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