Editing Chestnut (section)

=== Similar species ===
The unrelated [[horse chestnut]]s (genus ''[[Aesculus]]'') are not true chestnuts, but are named for producing nuts of similar appearance that are mildly poisonous to humans. True chestnuts should also not be confused with [[Eleocharis dulcis|water chestnut]]s, which are tubers of an aquatic herbaceous plant in the sedge family [[Cyperaceae]].<ref name="answers" /><ref name="chestnutbrook" /> Other species commonly mistaken for chestnut trees are the chestnut oak (''[[Quercus prinus]]'') and the American beech (''[[Fagus grandifolia]]''),<ref name="chestnuttree">[http://www.chestnuttree.net/ Chestnut Tree] {{webarchive|url=https://web.archive.org/web/20080705113403/http://www.chestnuttree.net/|date=July 5, 2008}} in chestnuttree.net.</ref><ref name="nzcouncil" /> both of which are also in the Fagaceae family. [[Brazil nuts]], called "Brasil chestnuts" (''castañas de Brasil'' in Spanish) or "chestnuts from Pará" (''castanha-do-Pará'' in Portuguese) are also unrelated.