ibclogo XVI International Botanical Congess


Abstract Number: 2975
Session = 11.3.2


PHYLOGENETICS OF THE MONOCOTYLEDONS


*J.I. Davis, #D.W. Stevenson, @J.V. Freudenstein, *#C.R. Hardy, *M.W. Simmons, #C.D. Specht, *Cornell University, #New York Botanical Garden, @Kent State University.


Recent phylogenetic studies resolve Acorus, Alismatanae, and Aranae (approximately as circumscribed by Dahlgren, Clifford, and Yeo, 1995, Families of Monocotyledons) as early-diverging lineages within the monocots, but differ in the precise relationships resolved among these three groups and a fourth that includes all other monocots. In the latter group, a clade that includes Arecanae, Bromelianae, Commelinanae, and Zingiberanae (the ABCZ clade), and a clade that includes Cyclanthanae, Pandananae, and Velloziaceae (of Bromelianae) are nested among elements of a nonmonophyletic Lilianae. Current work on the higher-level structure of the monocots is focused on the Lilianae and on the ABCZ clade, within which Arecanae and Zingiberanae appear to be monophyletic, and Bromelianae and Commelinanae do not.


HTML-Version made 7. July 1999 by Kurt Stüber