We employed a combination of vocabularies including RDF, RDFS, OWL, XSD, SKOS, DCAT, VoID, PROV-O, FOAF, and WD, to extensively describe all useful data and metadata. We attempted to follow existing recommendations when available, e.g. , although a lack thereof seems to prevail in our domains of interest. Hence, we are developing our own vocabulary, prefixed "jlw:", to encompass all the unique concepts encountered. In addition, we use the "enpkg:" prefix to denote entities from our 'companion project' ENPKG , which provides a first public release of the plant/chemistry data subset. Where appropriate, these jlw: and enpkg: entities are linked to their counterparts using the OWL property owl:SameAs for strict equivalence matching. This strategy allowed us to coordinate the two projects while preserving the necessary freedom to operate. A restricted-access website was set up, containing links to the SPARQL endpoint, vocabularies descriptions generated by Widoco and summaries of the data as html tables. RDF imported directly from Zenodo; public