(biology) taxonomic group containing one or more species

comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae

genus of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms

genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins

genus of relatively early dicotyledonous plants including mostly flowers

genus of more or less advanced dicotyledonous trees and shrubs and herbs

genus of more or less advanced dicotyledonous herbs and some trees and shrubs

comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae