Characteristics and phytogeographical analysis of a subset of the flora of La Selva (Costa Rica).

Author(s): 
Hammel, B.E.
Year: 
1986
Journal: 
Selbyana
Volume: 
9
Issue: 
1
Page Range: 
149–155
Keywords: 
Cecropiaceae, Clusiaceae, Cyclanthaceae, Lauraceae, Marantaceae, Moraceae, La Selva, phytogeography, floristic comparisons
Abstract: 
Approximately 75 percent of the species of Cecropiaceae, Clusiaceae, Cyclanthaceae, Lauraceae, Marantaceae, and Moraceae are rare or uncommon at La Selva, 30 percent are dioecious, most are probably insect pollinated and bird dispersed, 30 percent are epiphytic, and 42 percent are found only in primary forest. To a certain degree, these characteristics are predictive of the entire flora and to the flora of the Caribbean lowland region in general. La Selva shares more species and genera in this subset of its flora with Barro Colorado Island, Panama, than with Rio Palenque Science Center, Ecuador. In general, the principal phytogeographic affinities of La Selva, as demonstrated by these six families, are to the south.