Which genus has the most species, Stachyurus or Buckinghamia?
Stachyurus Stachyurus is the only genus in the flowering plant family Stachyuraceae, native to the Himalayas and eastern Asia. They are deciduous shrubs or small trees with pendent racemes of 4-petalled flowers which appear on the bare branches before the leaves. The plants have leaves with serrate margins. Stachyuraceae contains a single genus with eight species.
Cabombaceae The Cabombaceae are a family of aquatic, herbaceous flowering plants. The family is recognised as distinct in the Angiosperm Phylogeny Group IV system (2016). The family consists of two genera of aquatic plants, "Brasenia" and "Cabomba", totalling six species.