To which taxonomic category do both Lithocarpus and Maackia belong?
Lithocarpus: Lithocarpus is a genus in the beech family Fagaceae, differing from "Quercus" in the erect spikes of insect-pollinated male flowers and the short styles with punctate stigmas on the female flowers. Maackia: Maackia is a genus of flowering plants in the legume family, Fabaceae.
genus