Showing Food Acorn
|Description||The acorn, or oak nut, is the nut of the oaks and their close relatives. It usually contains a single seed (rarely two seeds), enclosed in a tough, leathery shell, and borne in a cup-shaped cupule. Acorns vary from 1–6 cm long and 0.8–4 cm broad. Acorns take between about 6 and 24 months (depending on the species) to mature; see List of Quercus species for details of oak classification, in which acorn morphology and phenology are important factors.|
|Content Reference||— U.S. Department of Agriculture, Agricultural Research Service. 2008. USDA National Nutrient Database for Standard Reference, Release 21. Nutrient Data Laboratory Home Page.|
— Shinbo, Y., et al. 'KNApSAcK: a comprehensive species-metabolite relationship database.' Plant Metabolomics. Springer Berlin Heidelberg, 2006. 165-181.