I get curious about this every time I cut open a lime: How can these citrus fruits not have seeds? Or are they just so tiny I can't see them? Turns out, the limes typically sold in supermarkets [1] are Persian or Tahiti limes and, like the Bearss lime, are indeed seedless. Key limes, on the other hand, contain seeds. The seedless limes are classified as a parthenocarpic fruit [2], meaning the flowers don't require pollen to make fruit. Though some fruits are bred to have no seeds [3], seedless limes are naturally occurring. So squeeze away.

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