Anatomía del Xilema secundario de diez especies de la familia Bignoniaceae de Venezuela

the wood anatomy of ten species of the bignoniaceae family growing in venezuela is presented: crescentia amazonica, jacaranda copaia, j. filicifolia, j. obtusifolia, tabebuia chrysea, t. chrysantha, t. impetiginosa, t. rosea, t. serratifolia and t. stenocalyx. in crescentia amazonica silica bodies in axial parenchyma cells were found. foraminate perforation plates were found in crescentia amazonica and tabebuia rosea. all species have homocelular rays with only procumbent cells except in j. copaia, which has some heterocellular rays. according anatomical features, tabebuia species were distributed in two groups except t. chrysea which has anatomical features of both groups.