RxNORM
Plant Ontology
Source
http://purl.bioontology.org/ontology/STY/T001
http://purl.obolibrary.org/obo/OBI_0100026
LOOM
http://purl.bioontology.org/ontology/STY/T044
http://purl.obolibrary.org/obo/GO_0003674
LOOM