When it comes to naturally occurring and domesticated native tubers, North American biodiversity is comparatively sparse. It was promoted by French agricultural writers Antoine Parmentier (1789) and especially by Victor Yvart (1790) who wrote a treatise on the subject, and fresh truffles - wholesale prices is even mentioned by American cookbook writer Amelia Simmons in 1796. Rich in inulin, truffles the Jerusalem artichoke was extensively cultivated by native peoples in North America, particularly within the Midwest where it's thought to have originated. The African panorama is wealthy in leafy vegetables, however till the introduction of yams about 1000 C.E.
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