“It concerns the opinion of Naudin and Darwin that a single pollen grain does not suffice for fertilization of the ovule. I used Mirabilis Jalappa for an experimental plant, as Naudin had done; the result of my experiment is, however, completely different. From fertilizations with single pollen grains, I obtained eighteen well-developed seeds, and from these an equal number of plants, of which ten are already in bloom”

—  Gregor Mendel

Letter VIII, July 3rd, 1870.
Letters to Carl Nägeli

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Gregor Mendel 11
Silesian scientist and Augustinian friar 1822–1884

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