Zilla schouwioides Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 382. 1842.

Type: “[Aucher-Eloy] N. 4146, Persia australis”.

Holotypus: IRAN: “Pers. australis”, s.d., Aucher-Eloy 4146 (G-BOIS [G00332671]; iso-: BM [BM001254147, BM001254148], G [G00446308, G00446309], K [K000653941], KW [KW000127941], P [P00741672, P00741673], W [W0075579]) .

= Physorhynchus chamaerapistrum (Boiss.) Boiss., Fl. Orient. 1: 403. 1867.

Note. – The specimen in G-BOIS is the holotype because BOISSIER (1842c) based the species description solely on it.