Erysimum blancheanum Boiss., Fl. Orient. Suppl.: 38. 1888.

Type: “Hab. in ditione Gebel Abiad deserti ad Palmyram (Bl.)”.

Holotypus: SYRIA: “ Désert de Syrie. Hama à Palmyr. Dans le Djebel Abiad ”, 21. V .1857, Blanche 2899 (G-BOIS [G00154034]; iso-: JE [JE0002791]) .

= Erysimum oleifolium J. Gay, Erysim. Nov.: 6. 1842.

Notes. – POLATSCHEK (2011: 442) examined both of the JE and G-BOIS duplicates and designated the former as the isolectotype of the illegitimate E. hamosum Post, which is based on the same collection of the earlier published E. blancheanum .

However, the latter name does not need lectotypification because Boissier examined only the unicate in his herbarium to draft the species description.