Erysimum hirschfeldioides Boiss. & Hausskn.

AL-Shehbaz, Ihsan A. & Barriera, Gabrielle, 2019, Typification of Edmond Boissier’s Cruciferae (Brassicaceae) names enumerated in Flora Orientalis, Boissiera 72, pp. 1-193 : 39

Erysimum hirschfeldioides Boiss. & Hausskn. in Boiss.,

Fl. Orient. Suppl.: 39. 1888.

Type: “Hab. in Mesopotamiae deserto fluvii Chabur (Haussk.!)”.

Holotypus: SYRIA: “In deserto fl. Chabur”, s.d., Haussknecht s.n. ( G-BOIS [ G00154042 ]; iso-: JE [ JE00001840 ]) .

Notes. – POLATSCHEK (2011) designated the JE specimen as the lectotype and the G-BOIS (as G) as isolectotype. Both specimens were collected from the same locality, but the JE sheet has the collection date as May 1865, whereas the G-BOIS sheet has a preprinted label that reads “Inter Orient. Mesopotamia. C. Haussknecht. Mars-Juin 1867” in addition to handwritten locality exactly as in the protologue .

We believe that Haussknecht’s preprinted label, which were encountered in several collections of other species, was used in error and does not imply a different collection date from that of JE specimen.

Furthermore, Polatschek erred by indicating that the JE sheet is Haussknecht 39 (instead of Haussknecht s.n.) because that sheet has no such number, and the collection number that he added was a mistake resulting from taking the publication page “39” as the collection number. Finally, there is no evidence indicating that the original description of the species by Boissier was drafted from using both duplicates and, therefore, the G-BOIS sheet is recognized as the holotype .