იოჰან ვოლფგანგ ფონ გოეთე

Versuch die Metamorphose der Pflanzen zu erklären, known in English as Metamorphosis of Plants, was published by German poet and philosopher Johann Wolfgang von Goethe in 1790. In this work, Goethe essentially discovered the homologous nature of leaf organs in plants, from cotyledons, to photosynthetic leaves, to the …