ANATOMÍA XILEMÁTICA DE LIANAS DE LA FAMILIA BIGNONIACEAE EN LA RESERVA FORESTAL DE CAPARO (BARINAS, VENEZUELA) Wood anatomy of lianas of the Bignoniaceae family in Caparo Forest Reserve (Barinas state, Venezuela)

The wood anatomy study of eleven lianas species from Bignoniaceae family reported in the Caparo Forest Reserve (Barinas state, Venezuela) is presented: Anemopaegma chrysoleucum, Arrabidaea candicans, A. verrucosa, Ceratophytum tetragonolobum, Cydista aequinoctialis, Macfadyena uncata, M. unguis-cati, Paragonia pyramidata, Pithecoctenium crucigerum, Phryganocydia corymbosa and Xylophragma seemannianum. The species were included in two groups: species with two-sized rays and species without two-sized rays. All the species have two-sized pores, simple perforation plates, alternate intervessels pits, circular to oval, ray-vessels pits similar to intervessel pits in size and shape, paratraqueal vasicentric parenchyma and cambial variants (anomalous structure). A dichotomous key for identification is presented.