HILL, R. S.&READ, J., 1991. A revised infrageneric classification ofNothofagus(Fagaceae). An examination of cupule morphology, leaf architecture and cuticular morphology ofNothofagusspecies demonstrates that the existing infrageneric classifications are inaccurate. Four subgenera are proposed, based on these characteristics as well as other morphological information. This analysis indicates that the traditional pollen groupings ofNothofagusclosely reflect the infrageneric taxonomy. It is hypothesized that deciduousness is primitive inNothofagus, and the evergreen habit has arisen more than once, and therefore the deciduous or evergreen habit is invalid as a primary taxonomic character.