Polygonum oxyspermum subsp. robertii (Loisel.) Akeroyd & D.A.Webb in Bot. J. Linn. Soc. 97: 344. 1988
Polygonum oxyspermum subsp. robertii in Bot. J. Linn. Soc. 97: 344. 1988
is new combination for Polygonum robertii in Mém. Soc. Linn. Paris 6: 409. 1827
Polygonum oxyspermum subsp. robertii in Bot. J. Linn. Soc. 97: 344. 1988