What plant containing single-seeded, blue-black drupes is part of the Manilkara zapota family?
Manilkara zapota Manilkara zapota, commonly known as the sapodilla ( ), is a long-lived, evergreen tree native to southern Mexico, Central America and the Caribbean. An example natural occurrence is in coastal Yucatán in the Petenes mangroves ecoregion, where it is a subdominant plant species. It was introduced to the Philippines during Spanish colonization. It is grown in large quantities in Pakistan, India, Thailand, Malaysia, Cambodia, Indonesia, Bangladesh and Mexico.
Commelina tuberosa Commelina tuberosa is an herbaceous plant in the dayflower family native to Mexico but grown worldwide as an ornamental plant. It is characterized by its purple-splotched spathes with free margins, its bright blue petals of equal size, its tuberous roots, and its four to ten flowered lower cymes. In the wild, it is encountered in moist fields, open forests, or pine-oak forests. The species is sometimes considered to include the species "Commelina coelestis", "Commelina dianthifolia", and "Commelina elliptica", such as in the Flora Mesoamericana. When these are treated as separate, they are often referred to as the ""Commelina tuberosa" complex". Horticulturally, the species are often treated as separate entities because of their differing habits and leaf shapes. In this sense, "Commelina tuberosa" is a low-growing plant with long narrow leaves.