แหล่งที่มา WikiPedia: Orthion http://www.ipni.org/ipni/idPlantNameSearch.do?id=2... http://www.irmng.org/aphia.php?p=taxdetails&id=131... http://www.plantsoftheworldonline.org/taxon/urn:ls... http://legacy.tropicos.org/Name/40034011 https://npgsweb.ars-grin.gov/gringlobal/taxonomyge... https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwt... https://www.gbif.org/species/7296282 https://www.inaturalist.org/taxa/273169
