ByttnerioideaeByttnerioideae is a subfamily of the flowering plant family Malvaceae.Byttneria is the type genus for the subfamily. Byttneria is now treated as synonym of Ayenia.Tribes and generaFour tribes are recognised by the Germplasm Resources Information Network:[Byttnerieae]Abroma Jacq.Ayenia L.Byttneria Loefl. Kleinhovia L.Leptonychia Turcz.Megatritheca CristóbalRayleya Cristóbal Scaphopetalum Mast.[Hermannieae]Dicarpidium F.Muell.Gilesia F.Muell.Hermannia L.Melochia L.Waltheria L.[Lasiopetaleae]Commersonia J.R.Forst. & G.Forst.Guichenotia J.GayHannafordia F.Muell.Keraudrenia J.Gay Lasiopetalum Sm.Lysiosepalum F.Muell.Maxwellia Baill.Rulingia R.Br.Seringia J.GayThomasia J.Gay[Theobromateae]Glossostemon Desf.Guazuma Mill.Herrania GoudotTheobroma L.