Mark Alan Hershkovitz

In Phytologia 102 (4): 116–123, Hershkovitz recombined into Rumicastrum Ulbrich 65 Australian Montiaceae species originally classified in Calandrinia Kunth. Three of these species, all described by Karl von Poellnitz, do not pertain to Rumicastrum. The type specimen of Rumicastrum dielsii (Poelln.) Carolin is Calandrinia menziesii (Hook.) Torr. & A.Gray, a western North American species naturalized in Australia. The type specimen of Rumicastrum cylindricum (Poelln.) Carolin appears to be Bergia L. (Elatinaceae), but the species is not determined here. The type specimen of Rumicastrum monogynum (Poelln.) Carolin has not been located and may have been destroyed. The protolog is incomplete, but the specified characteristics suggest that it does not pertain to Montiaceae. Its identity is not determined here. In addition to the above, Hershkovitz listed Calandrinia pusilla Lindl., nom illegit., as a nomenclatural rather than taxonomic synonym of Rumicastrum eremaeum (Ewart) Carolin. Although homotypic, it is a taxonomic synonym. The status of other possible taxonomic synonyms combined into Rumicastrum also is discussed. Finally, Hershkovitz ascribed authorship of several Rumicastrum combinations to Roger Carolin. The question as to whether authorship should be ascribed as “Carolin ex Hershk.” is here addressed.