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The acorn is the nut of the oaks and their close relatives (genera Quercus, Notholithocarpus and Lithocarpus, in the family Fagaceae). It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp, and borne in a cup-shaped cupule .
The fruit, an acorn or nut, is borne singly or in pairs, matures in one year, and ripens in September or October. About half of the acorn is enclosed in a thin cup and is chestnut brown to nearly black. [2] "Ruth" a Chinquapin White Oak Tree. Chinquapin oak is closely related to the smaller but generally similar dwarf chinquapin oak (Quercus ...
The fruit is a nut called an acorn, borne in a cup-like structure known as a cupule; each acorn usually contains one seed and takes 6–18 months to mature, depending on the species. The acorns and leaves contain tannic acid , [ 5 ] which helps to guard against fungi and insects. [ 6 ]
Origin language and etymology Example(s) bacillus: rod-shaped Latin baculus, stick Bacillus anthracis: bacteri-Pertaining to bacteria: Latin bacterium; Greek βακτήριον (baktḗrion), small staff bacteriophage, bactericide: balan-of the glans penis or glans clitoridis: Greek βάλανος (bálanos), acorn, glans balanitis: bas-of or ...
Cafe chalkboard advertising a "pre fixed" menu, an eggcorn of the French prix fixe (fixed price). An eggcorn is the alteration of a word or phrase through the mishearing or reinterpretation of one or more of its elements, [1] creating a new phrase which is plausible when used in the same context. [2]
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Acorn worm on the ocean floor. Most acorn worms range from 9 to 45 centimetres (3.5 to 17.7 in) in length, with the largest species, Balanoglossus gigas, reaching 1.5 metres (5 ft) or more. The body is made up of three main parts: an acorn-shaped proboscis, a short fleshy collar that lies behind it, and a long, worm-like trunk.
California physician and botanist (and one of the founding fathers of the California Academy of Sciences) Albert Kellogg described an oak in an 1855 publication as Quercus arcoglandis (spur acorn oak), [10] apparently the same species as Q. wislizeni. This clearly predates French-Swiss botanist de Candolle's 1864 name, and if confirmed to be ...