From Icones ad vivum delineatae et expressae virorum clariorum qui praecipue scriptis Academiam Lugduno-Batavam illustrarunt (1609). This is one from a series of thirty-four portraits engraved by Willem van Swanenburg, for comment see Bb,15.1079 and BM 1875,0410.516. Charles de l'Écluse, L'Escluse, or Carolus Clusius (Arras, February 19, 1526 – Leiden, April 4, 1609), seigneur de Watènes, was a Flemish doctor and pioneering botanist, perhaps the most influential of all 16th-century scientific horticulturists.