Image #BRR-1: Discussion of how to measure buttressed trees at the Barro Colorado tropical forest site, Panama. (Dr. Robin Foster [with arm raised] is showing Bolivian student Marielos Peña that the measurement should be made on the cylindrical part of the trunk above the buttresses. The tree species is Tachigali versicolor (Fabaceae), so-called the "suicidal tree", since it dies after its first flowering. Photograph taken around 1992 by Marcos Guerra, STRI).