International Code of Botanical Nomenclature

(Tokyo Code), Electronic version


CHAPTER IV. EFFECTIVE AND VALID PUBLICATION

SECTION 3. CITATION OF AUTHORS' NAMES FOR PURPOSES OF PRECISION

Article 50

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.

Ex. 1. Stachys ambigua Sm. (1809) was published as the name of a species. If regarded as applying to a hybrid, it may be cited as Stachys xambigua Sm. (pro sp.).

Ex. 2. The binary name Salix xglaucops Andersson (1868) was published as the name of a hybrid. Later, Rydberg (in Bull. New York Bot. Gard. 1: 270. 1899) considered the taxon to be a species. If this view is accepted, the name may be cited as Salix glaucops Andersson (pro hybr.).


Contents | Next/previous article | Subject index | Index to scientific names | Contact editors | Regnum Vegetabile

© by International Association for Plant Taxonomy. This page last updated Sept. 25, 1997.