Erysimum graecum Boiss. & Heldr. in Boiss., Diagn. Pl. Orient. ser. 2, 1: 27. 1854.

Type: “Hab. circâ Athenas vere copiosum (Boiss! Heldr. exs. Nº 1708)”.

Lectotypus (designated by POLATSCHEK, 1973: 118): GREECE: “In campis Atticae”, 24.V.1854, fl., Heldreich 1708 (G-BOIS [G00154041 first sheet and plant on left of third sheet]; isolecto-: E [E00438496], FI [FI10144], G [G00446056], GJO, K [K000693747 plant on top], LI, M, PR, W [W0063911]) . Syntypi: GREECE: sine loco, 1842, Boissier s.n. (G-BOIS [G00330476]) ; sine loco, s.d., Boissier s.n. (G [G00446610], K [K000693747 two fruiting branches on bottom]); “ Attica ”, VII.1854, fr., Heldreich 1708 (BM [BM00125400], FI [FI10144 two fruiting branches], G [G00446056 second sheet, fruiting material], G-BOIS [G00154041 second sheet, and plant on right of third sheet]); sine loco, 1847, Heldreich 1708 (G-BOIS [G00330477]) .

Notes. – The type collection of Erysimum graecum in G-BOIS, which consists of three sheets in a collection folder, is a mixed collection of flowering plants collected in May 1854 and fruiting material collected in July of that year.

The first sheet of this folder (G-BOIS [G00154041]) is the lectotype, which is a single plant in flower, annotated in 1972 by Polatschek as the holotype and later (POLATSCHEK, 1973) cited it as such. The second sheet is a single plant in fruit, and this is recognized here as a syntype. The third sheet, which is with a handwritten label by Boissier indicating “Attica Heldreich 1854”, has a fruiting plant on right (syntype) and a flowering plant on the left, which is recognized as part of the lectotype.

Boissier’s handwritten duplicates of the type collection of this species at G, as well as the sheet at E, do not carry Heldreich’s collection number 1708.