Hieracium echioides subsp. procerum (Fr.) P. D. Sell in Bot. J. Linn. Soc. 71: 259. 1976
Hieracium echioides subsp. procerum in Bot. J. Linn. Soc. 71: 259. 1976
is new combination for Hieracium procerum in Nova Acta Regiae Soc. Sci. Upsal. 14: 43. 1848
Hieracium echioides subsp. procerum in Bot. J. Linn. Soc. 71: 259. 1976