Hoya plants, commonly known as wax plants, are beloved for their unique foliage and fragrant flowers. Belonging to the Apocynaceae family, these tropical plants originate from Southeast Asia and can ...

The families with the greatest numbers of species were Euphorbiaceae (20 species), Apocynaceae (18 species), Rubiaceae (15), Fabaceae (12), Mimosaceae (11) and Capparaceae and Asteraceae (10 each).