Vincenzo Ilardi, Giulia Maria Titone, Francesco Sottile, Natale Badalamenti, Maurizio Bruno
The genus Pseudoconyza Cuatrec. (Inuleae, Asteraceae) is a monotypic genus widespread in Africa, Asia, North and Central America. Pseudoconyza viscosa (Mill.) D'Arcy is the only species of the genus, formerly known as Laggera aurita, although some authors report it as Blumea viscosa. The plant is largely utilised in the local popular medicine and although research has been carried out on its biological properties, its essential oil results are poorly investigated. This is the first report regarding the chemical composition of the essential oil (EO) from aerial parts of this plant, collected in Oman. The EO (Pv) was characterised by large amounts of sesquiterpene hydrocarbons (37.4%), with β-selinene (11.6%) as main metabolite of the oil, and oxygenated sesquiterpene (28.4%), although also good quantity of limonene (11.2%), belonging to monoterpene hydrocarbons (19.8%) was also observed. A comparison with previously published results regarding EOs of the Laggera species is discussed.