Hugo von Mohl

Mohl studied medicine in Tübingen and used material from Carl von Martius’s Brazilian expedition to investigate palm and tree-fern stems. In 1835 he became professor of botany at Tübingen, pursuing research in cellular anatomy, tissues and physiology.

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Mohl observed division in the alga Cladophora in 1835 and examined cell divisions associated with stomatal formation in 1838. Such observations supported cell production through division, offering a different account from theories that treated new cells as crystallizing in an unstructured substance.

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In 1846 Mohl applied protoplasm to the living contents of plant cells. He studied wall thickening, pits and the cellular construction of plant fibres. Also skilled in microscope optics, he co-founded Botanische Zeitung with Diederich von Schlechtendal in 1843, connecting observation with technical practice and publication.

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