Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
That looks like Oxalis corniculata - it's the one you keep pulling out of your pots. I've had some go variegated like that but it's not consistent unfortunately - most likely a weak mosaic virus.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
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