Ochna integerrima

Ochna integerrima, popularly called the Vietnamese mickey-mouse plant (Vietnamese: hoa mai, hoàng mai, although these names also refer to Prunus mume), is a tree species (sometimes shrub) of the family Ochnaceae. The yellow flowers of this plant make it very popular in southern Vietnam, where the plant is purchased during Tết.

In Vietnamese, the variety of O. integerrima whose flowers have five petals is called mai vàng (yellow mai), whereas mai núi (mountain mai) flowers have between five and nine petals.

In Cambodia, it is called angkea (អង្គា), angkeasel (អង្គាសីល), angkea loeung អង្គាលឿង or kongkea គង្គា.

Ochna integerrima (Thai: ช้างน้าว Chang nao) is the provincial flower of Mukdahan province, Thailand.