The latest edition of the three-year (13th) addendum to Sander’s list of orchid hybrids published by the Royal Horticultural Society. It contains names, parentage, and names of registrant and originator for all orchid hybrids registered between 1 January 2014 and 31 December 2016 – about 9,000 hybrids. It includes a master list of all accepted hybrid genera currently in use as well as their standard abbreviations and component genera. This has been made possible because all the name changes from Genera Orchidacearum volumes 1 to 6 have been incorporated.