Byttnerioideae

Byttneria is the type genus for the subfamily. Byttneria is now treated as synonym of Ayenia.

Tribes and genera

Four tribes are recognised by the Germplasm Resources Information Network:

Byttnerieae

• Abroma Jacq.
• Ayenia L.
• Byttneria Loefl. (synonym of Ayenia)
• Kleinhovia L.
• Leptonychia Turcz.
• Megatritheca Cristóbal
• Rayleya Cristóbal (synonym of Ayenia)
• Scaphopetalum Mast.

Hermannieae

• Dicarpidium F.Muell.
• Gilesia F.Muell.
• Hermannia L.
• Melochia L.
• Waltheria L.

Lasiopetaleae

• Commersonia J.R.Forst. & G.Forst.
• Guichenotia J.Gay
• Hannafordia F.Muell.
• Keraudrenia J.Gay (synonym of Seringia)
• Lasiopetalum Sm.
• Lysiosepalum F.Muell.
• Maxwellia Baill.
• Rulingia R.Br.
• Seringia J.Gay
• Thomasia J.Gay

Theobromateae

• Glossostemon Desf.
• Guazuma Mill.
• Herrania Goudot
• Theobroma L.