4.5. Amaranthus cruentus L., Syst. Nat., ed. 10. 2: 1269. 1759.

Lectotype (designated by Townsend 1974: 12):— Herb. Linn. No. 1117.25 (LINN!, image of the lectotype available at http://linnean-online.org/11651/).

= Amaranthus flavus L., Syst. Nat., ed. 10. 2: 1269. 1759.

Lectotype (designated by Iamonico 2014a: 147):— Herb. Linn. No. 1117.23 (LINN!, image of the lectotype available at http://linnean-online.org/11649/).

= Amaranthus paniculatus L., Sp. Pl., ed. 2. 2: 1406. 1763.

Lectotype (designated by El Hadidi & El Hadidy 1981: 37):— Herb. Linn. No. 1117.20 (LINN!, image of the lectotype available at http:// linnean-online.org/11646/).

= Amaranthus sanguineus L., Sp. Pl., ed. 2. 2: 1407. 1763.

Lectotype (designated by Iamonico 2014a: 148):— Herb. Linn. No. 1117.21 (LINN!, image of the lectotype available at http://linnean-online.org/11647/).

Alien status:― Neophyte, native to Central America; it can be considered as naturalized in Saudi Arabia (Chaudhary 1998, Hassan et al. 2022).

Occurrence in Saudi Arabia:― Hassan et al. (2022: 153) refers the occurrence in Saudi Arabia of Amaranthus cruentus by citing Chaudhary’s Flora of the Kingdom of the Saudi Arabia (Chaudhary 1998) . Miller & Cope (1996: 288, 538) reported this species in Jazan nu with doubt. No specimen was traced by us. The sepcies remains doubtful as a member of the national flora.