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identification key
(english) A tabulation of characters used to identify a species. Two rubrics form a couplet, the usual arrangement of keys. Each couplet gives an alternative set of characters leading to the species identity or to the next couplet. Artificial key, q.v., bracketed key, q.v., dichotomous key, q.v., indented key (or yoked key), q.v., monothetic key, q.v., natural key, q.v., sequential key, q.v. (See also: character, species, identification)

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