Clypeola dichotoma Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 175. 1842.

Type: “[Aucher-Eloy] N. 4082, Aderbidjan”.

Holotypus: IRAN: “in aridis Aderbidjan”, s.d., Aucher-Eloy 4082 (G-BOIS [G00332473]; iso-: BM [BM001254086], G [G00389753, G00389754], K [K000697102], KW [KW000128009], LE [LE00013027], MO [MO1617733], P [P00835147, P00835148, P00835149, P00835150], W [W0075599, W18890077507]) .

Notes. – Because BOISSIER (1842b) based his species description solely on the unicate in his herbarium and did not annotate any of the four duplicates at P, the G-BOIS material should be the holotype. Therefore, the lectotypification by AL-SHEHBAZ (2013) of the G-BOIS unicate as the lectotype, was not needed.