| Acanthogonum Torr. | Chorizanthe R. Br. ex Benth. | | | Acanthogonum Torr. | Chorizanthe R. Br. ex Benth. | Polygonaceae |
| Acanthoscyphus Small | | a | | Acanthoscyphus Small | | Polygonaceae |
| Acetosa Mill. | Rumex L. | | | Acetosa Mill. | Rumex L. | Polygonaceae |
| Acetosella (Meisn.) Fourr. | Rumex L. | | | Acetosella (Meisn.) Fourr. | Rumex L. | Polygonaceae |
| Aconogonon (Meisn.) Rchb. | | a | | Aconogonon (Meisn.) Rchb. | | Polygonaceae |
| Aconogonum Rchb. | Aconogonon (Meisn.) Rchb. | | | Aconogonum Rchb. | Aconogonon (Meisn.) Rchb. | Polygonaceae |
| Afrobrunnichia Hutch. & Dalziel | | a | | Afrobrunnichia Hutch. & Dalziel | | Polygonaceae |
| Amblygonum (Meisn.) Rchb. | Persicaria (L.) Mill. | | | Amblygonum (Meisn.) Rchb. | Persicaria (L.) Mill. | Polygonaceae |
| Antenoron Raf. | Persicaria (L.) Mill. | | | Antenoron Raf. | Persicaria (L.) Mill. | Polygonaceae |
| Antigonon Endl. | | a | | Antigonon Endl. | | Polygonaceae |
| Aristocapsa Reveal & Hardham | | a | | Aristocapsa Reveal & Hardham | | Polygonaceae |
| Atraphaxis L. | | a | | Atraphaxis L. | | Polygonaceae |
| Bactria Yurtseva & Mavrodiev | | a | | Bactria Yurtseva & Mavrodiev | | Polygonaceae |
| Bilderdykia Dumort. | Fallopia Adans. | | | Bilderdykia Dumort. | Fallopia Adans. | Polygonaceae |
| Bistorta (L.) Scop. | | a | | Bistorta (L.) Scop. | | Polygonaceae |
| Blochmannia Rchb. | Triplaris Loefl. | | | Blochmannia Rchb. | Triplaris Loefl. | Polygonaceae |
| Brisegnoa Remy | Oxytheca Nutt. | | | Brisegnoa Remy | Oxytheca Nutt. | Polygonaceae |
| Brunnichia Banks ex Gaertn. | | a | | Brunnichia Banks ex Gaertn. | | Polygonaceae |
| Bucephalophora Pau | Rumex L. | | | Bucephalophora Pau | Rumex L. | Polygonaceae |
| Caelestium Yurtseva & Mavrodiev | | a | | Caelestium Yurtseva & Mavrodiev | | Polygonaceae |
| Calligonum L. | | a | | Calligonum L. | | Polygonaceae |
| Campderia Benth. | Coccoloba P. Browne | | | Campderia Benth. | Coccoloba P. Browne | Polygonaceae |
| Centrostegia A. Gray | | a | | Centrostegia A. Gray | | Polygonaceae |
| Ceratogonon Meisn. | Oxygonum Burch. ex Campd. | | | Ceratogonon Meisn. | Oxygonum Burch. ex Campd. | Polygonaceae |
| Coccoloba P. Browne | | a | | Coccoloba P. Browne | | Polygonaceae |
| Corculum Stuntz | Antigonon Endl. | | | Corculum Stuntz | Antigonon Endl. | Polygonaceae |
| Dedeckera Reveal & J. T. Howell | | a | | Dedeckera Reveal & J. T. Howell | | Polygonaceae |
| Delopyrum Small | Polygonella Michx. | | | Delopyrum Small | Polygonella Michx. | Polygonaceae |
| Dentoceras Small | Polygonella Michx. | | | Dentoceras Small | Polygonella Michx. | Polygonaceae |
| Dodecahema Reveal & Hardham | | a | | Dodecahema Reveal & Hardham | | Polygonaceae |
| Duma T. M. Schust. | | a | | Duma T. M. Schust. | | Polygonaceae |
| Duravia (S. Watson) Greene | Polygonum L. | | | Duravia (S. Watson) Greene | Polygonum L. | Polygonaceae |
| Emex Campd. | | a | | Emex Campd. | | Polygonaceae |
| Enneatypus Herzog | Ruprechtia C. A. Mey. | | | Enneatypus Herzog | Ruprechtia C. A. Mey. | Polygonaceae |
| Eriogonella Goodman | Chorizanthe R. Br. ex Benth. | | | Eriogonella Goodman | Chorizanthe R. Br. ex Benth. | Polygonaceae |
| Eriogonum Michx. | | a | | Eriogonum Michx. | | Polygonaceae |
| Eskemukerjea Malick & Sengupta | | a | | Eskemukerjea Malick & Sengupta | | Polygonaceae |
| Fagopyrum Mill. | | a | | Fagopyrum Mill. | | Polygonaceae |
| Fallopia Adans. | | a | | Fallopia Adans. | | Polygonaceae |
| Gilmania Coville | | a | | Gilmania Coville | | Polygonaceae |
| Gonopyrum Fisch. & C. A. Mey. | Polygonella Michx. | | | Gonopyrum Fisch. & C. A. Mey. | Polygonella Michx. | Polygonaceae |
| Goodmania Reveal & Ertter | | a | | Goodmania Reveal & Ertter | | Polygonaceae |
| Gymnogonum Parry, nom. inval. | Goodmania Reveal & Ertter | | | Gymnogonum Parry, nom. inval. | Goodmania Reveal & Ertter | Polygonaceae |
| Gymnopodium Rolfe | | a | | Gymnopodium Rolfe | | Polygonaceae |
| Harfordia Greene & Parry | | a | | Harfordia Greene & Parry | | Polygonaceae |
| Harpagocarpus Hutch. & Dandy | Fagopyrum Mill. | | | Harpagocarpus Hutch. & Dandy | Fagopyrum Mill. | Polygonaceae |
| Hollisteria S. Watson | | a | | Hollisteria S. Watson | | Polygonaceae |
| Homalocladium (F. Muell.) L. H. Bailey | Muehlenbeckia Meisn. | | | Homalocladium (F. Muell.) L. H. Bailey | Muehlenbeckia Meisn. | Polygonaceae |
| Chorizanthe R. Br. ex Benth. | | a | | Chorizanthe R. Br. ex Benth. | | Polygonaceae |
| Chylocalyx Hassk. ex Miq. | Persicaria (L.) Mill. | | | Chylocalyx Hassk. ex Miq. | Persicaria (L.) Mill. | Polygonaceae |
| Johanneshowellia Reveal | | a | | Johanneshowellia Reveal | | Polygonaceae |
| Knorringia (Czukav.) Tzvelev | | a | | Knorringia (Czukav.) Tzvelev | | Polygonaceae |
| Koenigia L. | | a | | Koenigia L. | | Polygonaceae |
| Lastarriaea J. Rémy | | a | | Lastarriaea J. Rémy | | Polygonaceae |
| Leptogonum Benth. | | a | | Leptogonum Benth. | | Polygonaceae |
| Magoniella Adr. Sanchez | | a | | Magoniella Adr. Sanchez | | Polygonaceae |
| Millspaughia B. L. Rob. | Gymnopodium Rolfe | | | Millspaughia B. L. Rob. | Gymnopodium Rolfe | Polygonaceae |
| Mucronea Benth. | | a | | Mucronea Benth. | | Polygonaceae |
| Muehlenbeckia Meisn. | | a | | Muehlenbeckia Meisn. | | Polygonaceae |
| Nemacaulis Nutt. | | a | | Nemacaulis Nutt. | | Polygonaceae |
| Neomillspaughia S. F. Blake | | a | | Neomillspaughia S. F. Blake | | Polygonaceae |
| Oxygonum Burch. ex Campd. | | a | | Oxygonum Burch. ex Campd. | | Polygonaceae |
| Oxyria Hill | | a | | Oxyria Hill | | Polygonaceae |
| Oxytheca Nutt. | | a | | Oxytheca Nutt. | | Polygonaceae |
| Parapteropyrum A. J. Li | Fagopyrum Mill. | | | Parapteropyrum A. J. Li | Fagopyrum Mill. | Polygonaceae |
| Persepolium Yurtseva & Mavrodiev | | a | | Persepolium Yurtseva & Mavrodiev | | Polygonaceae |
| Persicaria (L.) Mill. | | a | | Persicaria (L.) Mill. | | Polygonaceae |
| Phyllogonum Coville | Gilmania Coville | | | Phyllogonum Coville | Gilmania Coville | Polygonaceae |
| Physopyrum Popov | Atraphaxis L. | | | Physopyrum Popov | Atraphaxis L. | Polygonaceae |
| Pleuropteropyrum H. Gross | Koenigia L. | | | Pleuropteropyrum H. Gross | Koenigia L. | Polygonaceae |
| Pleuropterus Turcz. | Reynoutria Houtt. | | | Pleuropterus Turcz. | Reynoutria Houtt. | Polygonaceae |
| Podopterus Humb. & Bonpl. | | a | | Podopterus Humb. & Bonpl. | | Polygonaceae |
| Polygonella Michx. | | a | | Polygonella Michx. | | Polygonaceae |
| Polygonum L. | | a | | Polygonum L. | | Polygonaceae |
| Pterococcus Pall. | Calligonum L. | | | Pterococcus Pall. | Calligonum L. | Polygonaceae |
| Pteropyrum Jaub. & Spach | | a | | Pteropyrum Jaub. & Spach | | Polygonaceae |
| Pterostegia Fisch. & C. A. Mey. | | a | | Pterostegia Fisch. & C. A. Mey. | | Polygonaceae |
| Pteroxygonum Dammer & Diels | | a | | Pteroxygonum Dammer & Diels | | Polygonaceae |
| Rajania Walter | Brunnichia Banks ex Gaertn. | | | Rajania Walter | Brunnichia Banks ex Gaertn. | Polygonaceae |
| Reynoutria Houtt. | | a | | Reynoutria Houtt. | | Polygonaceae |
| Rheum L. | | a | | Rheum L. | | Polygonaceae |
| Rubrivena M. Král | Koenigia L. | | | Rubrivena M. Král | Koenigia L. | Polygonaceae |
| Rumex L. | | a | | Rumex L. | | Polygonaceae |
| Ruprechtia C. A. Mey. | | a | | Ruprechtia C. A. Mey. | | Polygonaceae |
| Salta Adr. Sanchez | | a | | Salta Adr. Sanchez | | Polygonaceae |
| Sidotheca Reveal | | a | | Sidotheca Reveal | | Polygonaceae |
| Stenogonum Nutt. | | a | | Stenogonum Nutt. | | Polygonaceae |
| Symmeria Benth. | | a | | Symmeria Benth. | | Polygonaceae |
| Systenotheca Reveal & Hardham | | a | | Systenotheca Reveal & Hardham | | Polygonaceae |
| Thysanella A. Gray | Polygonella Michx. | | | Thysanella A. Gray | Polygonella Michx. | Polygonaceae |
| Tovara Adans. | Persicaria (L.) Mill. | | | Tovara Adans. | Persicaria (L.) Mill. | Polygonaceae |
| Tragopyrum M. Bieb. | Atraphaxis L. | | | Tragopyrum M. Bieb. | Atraphaxis L. | Polygonaceae |
| Triplaris Loefl. | | a | | Triplaris Loefl. | | Polygonaceae |
| Uvifera Kuntze | Coccoloba P. Browne | | | Uvifera Kuntze | Coccoloba P. Browne | Polygonaceae |
| Vellasquezia Bertol. | Triplaris Loefl. | | | Vellasquezia Bertol. | Triplaris Loefl. | Polygonaceae |