Turnera ulmifolia

Turnera ulmifolia, commonly known as the ramgoat dashalong, yellow alder, Cuban buttercup or West Indian holly, is a species of flowering plant in the family Passifloraceae. It is native to Mexico, Central America, the Caribbean, and parts of northern South America and southern Florida. The plant is widely cultivated as an ornamental in tropical and subtropical regions and has become naturalized in many parts of the world. The species is sometimes confused with the closely related Turnera diffusa (damiana), leading to misidentification in horticultural and herbal trade....read more on Wikipedia.