The alkaloid pericalline was first reported by Svoboda from the roots of Catharanthus roseus (1). This was followed shortly thereafter by a report on an alkaloid with similar composition, tabernoschizine, from Schizozygia caffaeoides (2). A year later, we isolated pericalline from the roots of Catharanthus lanceus (3). Subsequently, (-)-apparicine was isolated from Aspidosperma oliuaceum, A. eburneum, A. multiflorum, and A. gomezianum by Gilbert et al. (4), and (+)-apparicine from Aspidosperma dasycarpon (4). The structure for (-)-apparicine was subsequently elucidated by Joule et al. (5) as I. Finally, an alkaloid named gomezine was isolated from Aspidosperma gomezianum by Owellen (6). An inspection of the physical data reported for all of these alkaloids (see Table I) shows them to be very similar, if not identical. Samples of pericalline from Catharanthus roseus and C. lanceus were available as were samples of tabernoschizine from Schizozygia caffaeoides and (-)-apparicine from Aspidosperma sp., and IR spectra (KBr) of all four alkaloids were superimposable. Since the report announcing the discovery of pericalline (1) predates those for the other alkaloids in question, i.e., tabernoschizine (2), gomezine (6), and apparicine (4), the name pericalline for this alkaloid should have priority.