Psychotria humboldtiana (Cham.) Müll.Arg. (Rubiaceae) is native to Brazil North, Colombia, Peru, Venezuela. Flora of the World documents 1 occurrence across 1 country.
This name is a synonym
Specimens are listed under the accepted name Palicourea humboldtiana (Cham.) Delprete & J.H.Kirkbr.
