http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:421764-1#synonyms
https://data.canadensys.net/vascan/name/Setaria%20glauca
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.128633/Setaria_glauca

"Setaria glauca" has also been used for the taxon Cenchrus americanus (http://powo.science.kew.org/taxon/235186-2) aka Pennisetum glaucum, though the iNat IDs of this are almost exclusively referring to Setaria pumila.