This is the most comprehensive presentation available of the taxonomy of the complicated neo-tropical palm group, Attaleinae. Sidney Glassman's valuable compilation takes the place of earlier piece-meal taxonomies on this group, which has attracted considerable attention due to its economic importance, large stature, complex morphology, paucity of collections for a number of species, and apparent predilection to form hybrids. Enhanced by extensive notes from herbarium, field, and laboratory studies along with numerous photographs, charts, and other illustrations, Glassman's taxonomy provides an important baseline for future work on the Attaleinae.