4.7. Amaranthus graecizans L., Sp. Pl. 2: 990. 1753.

Lectotype (designated by Fernald 1945: 139):—Herb. Clayton No. 442 (BM000051563!, image of the lectotype available at https://data. nhm.ac.uk/object/ca635ca9-9252-42a3-9082-60ec097bc2d6/1641427200000).

= Amaranthus angustifolius Lam., Encycl. [J. Lamarck & al.] 1: 115. 1783, nom. illeg. Art. 52.2 of the ICN (Turland et al. 2018).

Chorology:― Amaranthus graecizans s.l. is native to Europe, Central and Western Asia, and Northern Africa and considered as introduced in some European countries, North America, South Africa, and Australia (Iamonico 2015a). It is native in Saudi Arabia (Hassan et al. 2022).

At subspecific rank two main distribution areas can be highlighted, one ranging from Central to southern Europe plus North Africa [ subsp. graecizans and subsp. sylvestris (Vill.) Brenan], the second one in eastern Europe (Russia and adjacent territories) plus Central and southern Asia [ subsp. aschersonianus (Thell.) Costea and subsp. thellungianus (Nevski) Gusev] (see Iamonico 2015a: 34).