Lewis & Short

thallus, i, m., = θαλλός, a green stalk, green bough: cepae, Col. 11, 3, 58; Pall. Febr. 24, 4: Amyclaeus, perh. a myrtlebough, Verg. Cir. 376; Vulg. 2 Macc. 14, 4.