Léo Errera

Léo Abram Errera (4 September 1858 in Laeken – 6 August 1905 in Brussels) was a Belgian botanist, known for his research in the field of plant physiology.

In Strasbourg, he conducted research in the laboratories of Anton de Bary and Felix Hoppe-Seyler.

[3] He is credited with discovering the presence of glycogen in plants and fungi (amylopectin) through the use of sophisticated histochemical techniques.

[2] In 1886, he published an important observation linking cell division in plants to the behavior of soap bubbles, which came to be known as Errera's Rule: “the cell plate, at the time of its formation, adopts the geometry that a soap film would take under the same conditions.

(with a prefatory letter by Theodor Mommsen), a book that was later translated and published in English as "The Russian Jews; extermination or emancipation?"