Acorn
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The acorn is the nut of the oaks and their close relatives; alternatively known as glans. It usually contains a seedling surrounded by two cotyledons, enclosed in a tough shell known as the pericarp,
English oak acorn
Acorns of the willow oak in South Carolina (from small to large, counterclockwise from center): Q. phellos (willow oak), Q. falcata (southern red oak; top right), Q. alba (white oak), and Q. coccinea (scarlet oak). Scale bar at upper right is 1 cm.
Diagram of the anatomy of an acorn: A.) Cupule B.) Pericarp (fruit wall) C.) Seed coat (testa) D.) Cotyledons (2) E.) Plumule F.) Radicle G.) Remains of style. Together D., E., and F. make up the embryo.
Horses eating acorns. Acorns can cause painful death in equines, especially if eaten in excess.
Quercus robur
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Quercus robur, pedunculate oak, European oak, or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to Europe and western Asia, and is widel
Acorn
…amounts of tannins are very bitter, astringent, and potentially irritating if eaten raw. This is particularly true of the acorns of American red oaks and English oaks. The acorns of white oaks, being much lower in tannins, are nutty in flavor; this characteristic is enhanced if the acorns are given a light roast…
Quercus robur
Oak bark.
Male flowers
Ancient pedunculate oaks at Wistman's Wood in Devon, England