5b. Amaranthus graecizans L. subsp. sylvestris (Vill.) Brenan, Watsonia 4: 273. 1961

≡ Amaranthus sylvestris Vill., Cat. Pl. Jard. Strasb. 111. 1807 ≡ Amaranthus sylvestris Desf. ex Poiret, Tabl. École Bot.: 44. 1804, nom. nud., nom. inval. (Art. 38.2 Ex.1 of the ICN) ≡ Amaranthus graecizans var. sylvestris (Desf.) Asch., Beitr. Fl. Aethiop.: 176. 1867, comb. illeg. ≡ Amaranthus graecizans subsp. sylvestris (Vill.) O.Bolòs & Vigo, Butl. Inst. Catalana Hist. Nat., Secc. Bot. 38(1): 89. 1974 ≡ Amaranthus angustifolius proles sylvestris (Vill.) Thell., Syn. Mitteleur. Fl. [Ascherson & Graebner] 5(1(5)): 300. 1914 ≡ Amaranthus angustifolius subsp. sylvestris (Vill.) Heukels, Geïllustreerde Schoolflora voor Nederland: 170. 1934.

Type (lectotype designated by Townsend 1985: 31):— Herb. Tournefort 1849 (P!).

Iconography:— Willdenow (1790: Tab. VIII, fig. 16 sub A. viridis), Bayón (2015: 329, Figura 34)

Phenology:— Flowering time february.

Habitat and elevation:— Human-made habitat (coastal plain), 5–15 m a.s.l.

Chromosome number: —2n = 32.

Occurrence in Saudi Arabia (Fig. 5): — Jizan, Makkah.

Specimina visa selecta:— SAUDI ARABIA, Makkah, Jeddah, s.d., Kruijt 48 (L 1684182!); Jizan, human-made habitat (coastal plain), 5–15 m a.s.l., 17 February 2021, leg. Masrhai et Al-shaye, det. Masrhai, conf. Iamonico (PNUH!, RO!).