Plant Ontology National Center for Biotechnology Information (NCBI) Organismal Classification Source
http://purl.obolibrary.org/obo/PO_0006042 http://purl.bioontology.org/ontology/NCBITAXON/140490 LOOM
http://purl.obolibrary.org/obo/NCBITaxon_3193 http://purl.bioontology.org/ontology/NCBITAXON/3193 LOOM
http://purl.obolibrary.org/obo/PO_0025522 http://purl.bioontology.org/ontology/NCBITAXON/36048 LOOM