Oxalis frutescens

Oxalis frutescens, the shrubby woodsorrel, is a species of flowering plant in the family Oxalidaceae. It is native to New Mexico, Texas, Mexico, Central America, the southernmost Caribbean islands, and tropical South America as far as northern Argentina. A perennial subshrub reaching 35 cm, it is typically found in sandy soils in grasslands, pastures, roadsides, and open oak woodlands.

Subtaxa
The following subspecies are accepted:
 * Oxalis frutescens subsp. angustifolia (Kunth) Lourteig – U.S., Mexico, Central America
 * Oxalis frutescens subsp. borjensis (Kunth) Lourteig – Colombia, Venezuela
 * Oxalis frutescens subsp. frutescens – Mexico, Central America, Caribbean, South America