A new genus and species of Dipterocarpaceae from the Neotropics. II. Stem anatomy

An examination of the external morphology of a recent collection from Araracuara, Colombia, has suggested that the plant belongs to the primarily Old World family Dipterocarpaceae. A study of the wood, bark, and pith anatomy of this new taxon,Pseudomonotes tropenbosii Londoño, Alvarez & Forero, was undertaken to help confirm its systematic affinities. Comparisons ofPseudomonotes with data from the literature and reference wood slides, coupled with the use of computer-aided identification keys, support the view that its closest relationships probably are within the family Dipterocarpaceae. Detailed anatomical comparisons have revealed thatPseudomonotes' relationships are most likely to be with the subfamily Monotoideae, comprised of the African generaMonotes A. DC. andMarquesia Gilg.