Trichomes morphology, structure and essential oils of Pelargonium graveolens L’Hér. (Geraniaceae)

The present paper undertakes the study of the essential oils (EO) composition and trichomes distribution, morphology and anatomy of the aerial organs of Pelargonium graveolens L’Hér. which is an aromatic and medicinal species originating from Sfax (Tunisia). In fact, three morphologically distinct types of trichomes which are non-glandular trichomes, capitates glandular trichomes and peltate ones were observed with scanning electron microscopy...