ox·a·lis (ŏksə-lĭs, ŏk-sălĭs)
Any of numerous plants of the genus Oxalis, having cloverlike compound leaves usually with three leaflets and five-petaled, variously colored flowers. Also called sorrel, wood sorrel.
[Latin oxalis, wood sorrel, from Greek, from oxus, sour; see ak- in the Appendix of Indo-European roots.]
(click for a larger image)oxalis
windowbox wood sorrelOxalis rubra
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