Contrasting structure and composition of the understory in species-rich tropical rain forests

James V. LaFrankie^*, Peter S. Ashton, George B. Chuyong, Leonardo Co, Richard Condit, Stuart J. Davies, Robin Foster, Stephen P. Hubbell, David Kenfack, Daniel Lagunzad, Elizabeth C. Losos, Noor Supardi Md Nor, Sylvester Tan, Duncan W. Thomas, Renato Valencia, Gorky Villa