Darwiniana, nueva serie
versión impresa ISSN 0011-6793
Hoffmannia peckii is reported for the first time for Argentina, in San Pedro, Misiones. This is the second species of Hoffmannia recorded for Argentina together with H. australis. A lectotype is designed fo H. peckii. Descriptions, illustrations, a map and a key of the Argentinean species of Hoffmannia are included.
Palabras clave : Argentina; Hoffmannia; Misiones; Rubiaceae; Taxonomy.