Whether these compounds occur in other organs of R. exaltata or not is not reported. Interestingly, leaves of R. cernua accumulated the diarylheptanoid renecernin (2), which is the first reported diarylheptanoid in Renealmia species, characterized by a simple aliphatic chain without any double bond and one carbonyl group only in position C-3. Compound 2 has also been detected in leaves of three other Costa Rican accessions of R. cernua (WU0067274-75 and WU0065680). Thus the occurrence of 2 might be of chemosystematic significance for R. cernua.