The 100 million plus observations in the BIEN database are the product of contributions by 1076 different data contributors, including numerous individual herbaria, data indexers of herbarium or plot data, and individual plot database, for a total of 17,450,920 plot observations and 52,019,7375 herbarium specimens. Of the herbaria, 550+ are listed in Index Herbariorum.

BIEN 4.0 includes data from RAINBIO, TEAM, The Royal Botanical Garden of Sydney, Australia, and NeoTropTree.

The BIEN team is extremely appreciative of the input from all of the data providers who help make this endeavor possible.