The mango species with labyrinthine seeds are Mangifera camptosperma, Mangifera gedebe, and Mangifera inocarpoides. These species are characterized by the testa (seed coat) filling the crevices and folds of the cotyledons (seed leaves), causing them to adhere closely together.
The labyrinthine seed is characteristic of Mangifera odorata, commonly known as the Kuini mango, which is a natural hybrid between Mangifera indica and Mangifera foetida. It is distinguished by a complex, convoluted internal seed structure, referred to as labyrinthine, which is relatively unique among mango species and often linked to hybridization, influencing germination and propagation. Additionally, Mangifera foetida, known as the Horse Mango, also exhibits a similarly intricate seed structure. Such labyrinthine seeds are more frequently observed in wild Mangifera species and hybrids rather than in cultivated species like M. indica, which typically produce monoembryonic or polyembryonic seeds. Although this trait aids in the taxonomic identification within the genus, detailed anatomical studies remain limited, and the occurrence of labyrinthine seeds is not widespread across all mango species.