I have found all of the following to have pepperwood as one of their common names, and I have no idea which of them are represented on this page. Also, there are about as many more species that have peppertree as one of their common names and there could be further confusion with them.
Cinnamomum baileyanum and Cinnamomum laubatii also have peppertree among their many common names, but they are more commonly called cinnamon and are on that page on this site
my samples: NOTE: these pics were all taken in very bright incandescent lighting ("soft white" at 2700K) colors will vary under other lighting conditions
This sheet of South American pepperwood burl veneer was loaned to me by John Koehn whom I thank for this and other contributions to the site.