Nomen nudum
In taxonomy (especially in zoological and botanical nomenclature), a nomen nudum ("naked name"; plural nomina nuda) is a "designation" which looks exactly like a scientific name of an organism, and may have originally been intended to be a scientific name, but fails to be one because it has not (or has not yet) been published with an adequate description (or a reference to such a description). This makes it a "bare" or "naked" name, one which cannot be accepted as it stands. A largely equivalent but much less frequently used term is nomen tantum ("name only"). In  zoology. According to the rules of zoological nomenclature a "nomen nudum" is unavailable; the glossary of the "International Code of Zoological Nomenclature" gives this definition: And among the rules of that same Zoological Code: In botany. According to the rules of botanical nomenclature a "nomen nudum" is not validly published. The glossary of the "International Code of Nomenclature for algae, fungi, and plants" gives this definition: "Nomina nuda" that were published before 1 January 1959 can be used to establish a cultivar name. For example, "Veronica sutherlandii", a "nomen nudum", has been used as the basis for "Hebe pinguifolia" 'Sutherlandii