ibclogo XVI International Botanical Congess


Abstract Number: 2609
Poster No. = 1128


PHYTOGEOGRAPHY OF ANDEAN LOASACEAE AND GROSSULARIACEAE


Maximilian Weigend, Institute of Systematic Botany Munich, Menzinger STr. 67, D-80638 Munich.


Gross subdivision of the Andes into phytogeographical zones is compared to the distribution patterns of species, species groups and genera of the families Loasaceae and Grossulariaceae. In both families there are no groups at any taxonomical level correlating to a subdivision of the Andes in a northern, central and southern region. The Huancabamba deflexion is no phytogeographical boundary. Apparent sharp limits between the three segments are the result of undercollecting in and poor taxonomical resolution. The northern Peruvian region is a ecologically highly diversified mosaic of habitats with countless endemic species. Ecolocial and geographical factors have led to an enormous diversification in northern Peru. Most taxa in Loasaceae are restricted to shrply defined habitats (scree slopes, deciduous versus evergreen forest, puna, subparamo).


HTML-Version made 7. July 1999 by Kurt Stüber