INTERNATIONAL CODE OF BOTANICAL NOMENCLATURE online |
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50.1. When a taxon at the rank of species or below is transferred from the non-hybrid category to the hybrid category of the same rank (Art. H.10.2), or vice versa, the author citation remains unchanged but may be followed by an indication in parentheses of the original category.
(c) 2006, by International Association for Plant Taxonomy. This page last updated 16.03.2007 .