Charles de l'Écluse, L'Escluse, or Carolus Clusius, seigneur de Watènes, was an Artois doctor and pioneering botanist, perhaps the most influential of all 16th-century scientific horticulturists.

Rembert Dodoens was a Flemish physician and botanist, also known under his Latinized name Rembertus Dodonaeus. He has been called the father of botany. The standard author abbreviation Dodoens is used