title: The chemical composition of the essential oil of <i>Ptilostemon gnaphaloides</i> subsp. <i>pseudofruticosus</i> (Asteraceae) growing in Kythira Island, Greece
abstract: <i>Ptilostemon</i> is a small genus of the subtribe Carduinae (Asteraceae) that includes 15 species as annual or perennial herbs or small shrubs, spread in the Mediterranean arch, from Crimea and Turkey to the Iberian Peninsula and Morocco. Several species of this genus have been studied for the content of non-volatile metabolites whereas few investigations have been carried out on their essential oils. In the present study the chemical composition of the essential oil from aerial parts of <i>Pt
journal: Natural Product Research