Alyssum singarense Boiss. & Hausskn. in Boiss., Fl. Orient. Suppl.: 49. 1888.

 Odontarrhena singarensis (Boiss. & Hausskn.) Španiel et al. in Pl. Syst. Evol. 301: 2486. 2015.

Type: “Hab. in cretaceis montis Sindjar inter Zamuche et Zakinia (Haussk.!)”.

Holotypus: IRAQ: “In cretac. inter Zamucha & Zakinia, mt. Singarae ”, V.1867 , Haussknecht 91 (G-BOIS [G00332315]; iso-: BM [BM000595356], JE [JE00001888, JE00001889], K [K000697027]).

Note. – The BM and K duplicates were annotated by Dudley as isotypes, but they lack the collection number and precise locality in Sinjar Mt.