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Cirsium arvense L. ssp. horridum (Wimm. et Grab.) stat. nov. prov.

Flora Europaea (the typical species while this taxon is mentioned only as a synonym)             This taxon considered as a mere variety (var. horridum Wimm. et Grab.) and much rarely an independent species (Cirsium horridum (Wimm. & Grab.) Stankov, non (M.Bieb.) Fisch..) presents uniform populations in the whole boreal belt of Central Europe with clear, constant and well defined characters from the typical species. Therefore we think that it fully deserves the rank of a subspecies. It is a ruderal which inshabits the disturbed plots from the boreal belt. The relations of this taxon with the typical species would make a very interesting evolutionary study. West of Pangarati Pass, Haghimas Mountains, Harghita county, 12th of August 2010. dr. Alexandru Badarau, alexandru@transsilvanica.net Prislop Pass, Rodna Mountains, at the border between Bistrita-Nasaud, Maramures and Suceava county, 11th of August 2010. dr. Alexandru Badarau, alexandru@transsilvanica.net