Access to the crown of canopy trees

Many botanists collecting in the tropical rainforest face the problem of collecting from the often very tall canopy trees. Not always will tree climbers be available and even if they are they cannot always climb all trees, especially after a rain, or when lianas or nearby smaller trees are absent. A method was designed by Donald R. Perry (Biotropica 10, 1978, 155- 157) and later discussed by Dr. E. Torquebiau (BIOTROP) who drew my attention to this method and used it himself.