A critical inventory of the family Amaranthaceae s. str. in Saudi Arabia Author Hassan, Walaa A. 0000-0001-7605-9058 Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt & azmeyw @ gmail. com; https: // orcid. org / 0000 - 0001 - 7605 - 9058 azmeyw@gmail.com Author Al-Shaye, Najla A. 0000-0002-0447-8613 Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia & naaalshaye @ pnu. edu. sa; https: // orcid. org / 0000 - 0002 - 0447 - 8613 naaalshaye@pnu.edu.sa Author Iamonico, Duilio 0000-0001-5491-7568 Department of Environmental Biology, Univeristy of Rome Sapienza, 00185 Rome, Italy & duilio. iamonico @ uniroma 1. it; https: // orcid. org / 0000 - 0001 - 5491 - 7568 duilio.iamonico@uniroma1.it text Phytotaxa 2023 2023-11-28 626 4 223 246 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.626.4.1/51316 journal article 10.11646/phytotaxa.626.4.1 1179-3163 10212988 4.12. Amaranthus viridis L., Sp. Pl., ed. 2. 2: 1405. 1763. Lectotype (designated by Fawcett & Rendle 1914: 131 ):— Herb. Linn. No. 1117.15 ( LINN !, image of the lectotype available at http:// linnean-online.org/11641/). Alien status:― Neophyte, native to South America; it can be considered as naturalized in Saudi Arabia (see Chaudhary 1998 , Hassan et al. 2022 ). Occurrence in Saudi Arabia :― Al hudud ash Shamaliyah ( Osman & El-Ameid Abedin 2019 ), Bisha ( Abbas et al. 2020 ), Jizan and Makkah ( Miller & Cope 1996 ), Taif ( Abdullah et al. 2017 ). Specimina visa selecta:― SAUDI ARABIA , Jizan , human-made habitat, (coastal plain) 5–15 m , 17 Feb 2021 , leg. Masrhai et Al-shaye , det. Masrhai , conf. Iamonico (RO!).