| Family | Oxalidaceae |
| Scientific name | Oxalis barrelieri |
| Common name (English) | Lavender Sorrel |
| Common name (Malay) | / |
| Identified as | Pioneer plant on Project M.A.R.S.’s land |
Oxalis barrelieri, commonly known as Barrelier’s woodsorrel or lavender sorrel, is a perennial herb in the Oxalidaceae family. Native to the Caribbean and parts of Central and South America, it has spread widely through tropical regions as a naturalized species. Recognizable by its trifoliate leaves, pink to lavender flowers, and distinctive upright growth habit, the plant often appears in gardens, fields, and disturbed soils. Traditionally, Oxalis barrelieri has been used in folk medicine for its cooling, digestive-supporting, and anti-inflammatory properties.