Isatis undulata Aucher ex Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 200. 1842.

Type: “[Aucher-Eloy] N. 212, Cappadocia ad Euphratem”.

Holotypus: TURKEY: “Cappad. ad Euphratem”, s.d., AucherEloy 212 (G-BOIS [G00332593]; iso-: E [E00386034], G [G00371663], K [K000642857], P [P00741502, P00741503, P00741504], W [W18890171321]) .

Note. – The evidence supporting DAVIS (1965b: 297) recognition of the G-BOIS duplicate as the holotype is that none of the isotypes was annotated by Boissier.