Brassica willdenovii Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 88. 1842.

– Sinapis integrifolia sensu Willd., Hort. Berol. 1: tab. 14. 1804 [non H. West].

Type: “ Sinapis integrifolia Wild. [Aucher-Eloy] Mascate absque numero”.

Holotypus: OMAN: “ Muscat ”, s.d., Aucher-Eloy 1078 (P [P05383513]) .

= Brassica juncea (L.) Czern ., Conspect. Pl. Charc.: 8. 1859.

Notes. – Boissier in Flora Orientalis placed Brassica willdenowii and Sinapis integrifolia in the synonymy of S. juncea L., a species currently recognized as Brassica juncea .

No material of the species was located in the Geneva herbaria, and the holotype sheet was annotated by Boissier as “ Brassica willdenowii! Boiss. Sinapis integrifolia Willd. ”. Brassica willdenowii remained in ambiguity for over 175 years until the above discovery of the holotype.