Stock Photo: Fruit, leaves, flowers and catkins of the walnut tree, Juglans regia. Handcolored copperplate engraving of a botanical illustration from G. T. Wilhelm's "Unterhaltungen aus der Naturgeschichte" (Encyclopedia of Natural History), Vienna, 1816. Gottlieb Tobias Wilhelm (1758-1811) was a Bavarian clergyman and naturalist in Augsburg, where the first edition was published.
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