1	Leaf blades shallowly to completely peltate in mature plant	2
–	Leaf blades not peltate in mature plant	3
2	Peltate leaf with posterior lobes almost fully fused; appendix white	Alocasiakerinciensis A. Hay
–	Peltate leaf with posterior lobes never almost fully fused; appendix very pale orange to bright yellow	Alocasialongiloba Miq.
3	Robust to massive plant	4
–	Medium to small plant	6
4	Interprimary collective vein well-defined	Alocasiaalba Schott
–	Interprimary collective vein poorly defined	5
5	Inflorescences paired among lead base; peduncle exceeding length of cataphylls at anthesis; petiole glabrous	Alocasiamacrorrhizos (L.) G.Don
–	Inflorescences many, clustered together; peduncle short, mostly hidden with leaf sheath and cataphylls; petiole glabrous or minutely pubescent	Alocasiainornata Haillier f.
6	Intermarginal vein not formed; petiole puberulent or glabrous	Alocasiaarifolia Hallier f.
–	Intermarginal vein conspicuous; petiole glabrous	7
7	Abaxial leaf reddish to greenish purple to pale brown, with greenish tinge; appendix pale pink	Alocasiaroseus Asih & Yuzammi
–	Abaxial leaf yellowish green; appendix cream-colored	Alocasiaflemingiana Yuzammi & A.Hay