Parent taxon: Dicotyledones according to F. H. Knowlton 1919
See also Mabberley 2000 and McIver and Basinger 1993
Sister taxa: Anisophyllum, Araliopsoides, Asteridae, Campanulales, Campanulatae, Caryophyllidae, Casuarinales, Centrospermae, Chenopodiales, Chitaleypushpum, Chitaloxylon, Contortae, Cremocarpon, Deccanocarpon, Deccanophyllum, Dicotylirhizos, Dicotylophyllum, Dilleniidae, Ebenales, Ericales, Furcula, Hamamelidae, Harrisocarpon, Juglandales, Lauriphyllum, Lecythioxylon, Menispermophyllum, Miconiiphyllum, Mohgaoanthus, Myricales, Myrtales, Myrtiflorae, Oleales, Ordinicutis, Papaverales, Parietales, Platanales, Polemoniales, Primulales, Quadricolpites, Ranales, Raoanthus, Retiacolpites, Rhamnales, Rosidae, Rubiales, Sahnianthus, Sahniocarpon, Salicales, Sarraceniales, Stephanocolpites, Thymeleales, Triorites, Triporocolpatus, Tubiflorae, Umbellales, Umbelliflorae, Urticales, Wingospermocarpon
Subtaxa: none
Ecology: "photoautotroph"
Distribution: there are no occurrences of Polygonales in the database