the plant (a small creeper) Oxalis corniculata ( = O. pussilla, = Xanthoxalis corniculata) of Oxalidaceae family; wood sorrel.

the small, short weed Oxalis corniculata ( = O. pusilla, = Xanthoxalis corniculata) of Oxalidaceae family, with sour, clover-like compound leaves, that contain oxalic acid; wood sorrel.