If a name is cited with alterations from the form as originally published, it is desirable that in full citations the exact original form should be added, preferably between single or double quotation marks.
Pyrus calleryana Decne. (P. mairei H. Lév. in Repert. Spec. Nov. Regni Veg. 12: 189. 1913, ‘Pirus’).
Zanthoxylum cribrosum Spreng., Syst. Veg. 1: 946. 1825, “Xanthoxylon”(Z. caribaeum var. floridanum (Nutt.) A. Gray in Proc. Amer. Acad. Arts 23: 225. 1888, “Xanthoxylum”).
Spathiphyllum solomonense Nicolson in Amer. J. Bot. 54: 496. 1967, ‘solomonensis’.
