Alocasia nebula We have seeds, offset tubers, and plants from Alocasia Genus, click here to see our Alocasia collection. Alocasia nebula is a species of flowering plant in the family Araceae, native to Sarawak state, Malaysia. As a houseplant it is said to be the most difficult Alocasia to grow. SYNONYMS: Alocasia guttata var. imperialis …