Lewis & Short

hĕlĭchrȳ̆sos, i, m., and -um, i, n., = ἑλίχρυσος, the herb marigold, Gnaphalium stoechas, Linn.; acc. to others, Tanacetum annuum, Linn.; Plin. 21, 11, 38, § 65 sq.; 21, 25, 96, § 168.