International Code of Botanical Nomenclature

(Tokyo Code), Electronic version


CHAPTER IV. EFFECTIVE AND VALID PUBLICATION

SECTION 2. CONDITIONS AND DATES OF VALID PUBLICATION OF NAMES

Article 40

40.1. In order to be validly published, names of hybrids of specific or lower rank with Latin epithets must comply with the same rules as names of non-hybrid taxa of the same rank.

Ex. 1. "Nepeta xfaassenii" (Bergmans, Vaste Pl. Rotsheesters, ed. 2: 544. 1939, with a description in Dutch; Lawrence in Gentes Herb. 8: 64. 1949, with a diagnosis in English) is not validly published, not being accompanied by or associated with a Latin description or diagnosis. The name Nepeta xfaassenii Bergmans ex Stearn (1950) is validly published, being accompanied by a Latin description.

Ex. 2. "Rheum xcultorum" (Thorsrud & Reisaeter, Norske Plantenavr.: 95. 1948), being there a nomen nudum, is not validly published.

Ex. 3. "Fumaria xsalmonii" (Druce, List Brit. Pl.: 4. 1908) is not validly published, because only the presumed parentage F. densiflora x F. officinalis is stated.

Note 1. For names of hybrids of the rank of genus or subdivision of a genus, see Art. H.9.


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.