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H.4.1. When all the parent taxa can be postulated or are known, a nothotaxon is circumscribed so as to include all individuals (as far as they can be recognized) derived from the crossing of representatives of the stated parent taxa (i.e. not only the
Fl but subsequent filial generations and also back-crosses and combinations of these). There can thus be only one correct name corresponding to a particular hybrid formula; this is the earliest legitimate name (see
Art. 6.3) in the appropriate rank (Art.
H.5), and other names to which the same hybrid formula applies are synonyms of it.
(c) 2006, by International Association for Plant Taxonomy. This page last updated 19.03.2007 .