Isatis glauca Aucher ex Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 201. 1842.

Type: “[Aucher-Eloy] N. 214, Cappadocia ad Euphratem”.

Holotypus: TURKEY: “Capp. ad Euphratem”, s.d., AucherEloy 214 (P [P00741452; iso-: G-BOIS [G00332601], P [P00741453]) .

Notes. – The G-BOIS specimen has a label in Boissier’s handwriting, and it consists of a basal leaf and two lateral branches of developing infructescence taken from P00741452 that was annotated by Boissier as “ Isatis glauca! Auch ”.

The species was divided by DAVIS (1965b) into three subspecies.