Place of publication:
Excursionsfl. Schweiz 174. 1867 (A. R. Franchet, Fl. Loir-et-Cher 181. 1885)
Comment:
an illegitimate, superfluous name (Melbourne ICN Art. 52) for P. polygamum Waldst. & Kit. Gremli based his name on Poterium muricatum Spach, which was itself a superfluous name for P. polygamum Waldst. & Kit., the type of which was not explicitly excluded by Gremli, who cited it as a tentative synonym