In the tropical rainforest of Los Tuxtlas Mexico lianas (woody-climbing plants) had a clumped distribution on trees and 63.3 percent of trees >10 cm in diameter carried at least one liana. Trees with larger diameters Supported more lianas and a higher total basal area of lianas than trees with smaller diameters. There was no relationship between liana diameter and the number of trees a liana climbed but tendril climbers climbed on more trees than stem-twiners.