Every six months the World Flora Online publishes a new checklist of plant names. The checklist is available at doi:10.5281/zenodo.7467360 In December 2022 the publication mechanism began to include the data in JSON format for direct import into a SOLR index. As part of this change JSON format files were created for the previous data releases so that they can be imported into the same SOLR index as those from December 2022 onwards. This archive contains those JSON files. It is be possible to create the full history of the WFO Plant List in a SOLR index by loading these files followed by the JSON files provided in each data release from December 2022 onward.