Resumen

LEON H., Williams J.. Anatomic Study of the Secondary Xylem of the Anacardiaceae family in Venezuela. Acta Bot. Venez. [online]. 2003, vol.26, n.1, pp.1-30. ISSN 0084-5906.

This paper deals about wood anatomy of seventeen species from Anacardiaceae family in Venezuela: Anacardium excelsum, A. spruceanum, Astronium graveolens, A. obliquum, A. ulei, Campnosperma gumifera, Cyrtocarpa velutinifolia, Loxopterygium sagotii, Mangifera indica, Mauria heterophylla, Ochoterenaea colombiana, Spondias lutea, S. mombin, Rhus striata, Tapirira guianensis, T. obtusa and Thyrsodium spruceanum. The species were divided in two groups: species with radial gum ducts and species without radial gum ducts. Particularly noteworthy is the foraminate perforation plates in Mauria heterophylla and Thyrsodium spruceanum, reported for the first time in the family, and scalariform perforation plates in Tapirira guianensis and T. obtusa, reported for the first time in the genus. Adichotomous key is presented for wood identification.

Palabras clave : Anacardiaceae; identification; wood anatomy; multiple perforation plates; radial canals; Venezuela.