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 ×faassenii” (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 ×faassenii Bergmans ex Stearn (1950) is validly published, being accompanied by a Latin description.

Ex. 2.Rheum ×cultorum” (Thorsrud & Reisaeter, Norske Plantenavn: 95. 1948), being there a nomen nudum, is not validly published.

Ex. 3.Fumaria ×salmonii” (Druce, List Brit. Pl.: 4. 1908) is not validly published, as only the presumed parentage F. densiflora × F. officinalis is stated.

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