The stinging properties ofLaportea

  title={The stinging properties ofLaportea},
  author={W. V. Macfarlane},
  journal={Economic Botany},
Members of the Urticaceae have intruded themselves unpleasantly into human experience. The first modern description of the stinging apparatus and its effects came from Robert ttooke (10) in 1665, when he published an excellent engraving of the stinging hairs of nettles. Of the stinging hair, he says, "it tapers till it ends in a very sharp point, it is of a substance very hard and stiff, exceedingly transparent and clear, and, as I by many trials certainly found, is hollow from top to bottom… 

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