1 Natural History Museum of Denmark, Faculty of Science, Københavns Universitet2 Natural History Museum of Denmark, Natural History Museum of Denmark, Faculty of Science, Københavns Universitet3 Royal Botanic Gardens, Kew4 The Natural History Museum, Cromwell Road, london5 Natural History Museum of Denmark, Natural History Museum of Denmark, Faculty of Science, Københavns Universitet6 Royal Botanic Gardens, Kew
Urtica longifolia Burm. f. (1768) is the oldest available name known for Debregeasia velutina Gaudich. (≡ Debregeasia longifolia (Burm. f.) Wedd.), the type of the genus Debregeasia Gaudich. However, the previous assumption regarding the holotype of Urtica longifolia is incorrect and is here clarified. An incomplete specimen from Burman’s herbarium at G is shown to be part of the original material, but does not show all diagnostic characters referred to in the protologue and now necessary to distinguish D. longifolia from other species of that genus. It is designated lectotype, and an epitype, Jacobs 8058 (K), is designated to secure current usage. The confusing nomenclatural history of Missiessya in relation to Debregeasia is reviewed: “Missiessya” was invalidly published by Gaudichaud in 1847–1848; Weddell validly published it as an illegitimate superfluous name in 1854 and later (1857) as an illegitimate later homonym.
Taxon, 2013, Vol 62, Issue 3, p. 622-625
The Faculty of Science; Botanik; botanical taxonomy; Nomenclature; Debregeasia; Missiessya; Burman; Urticaceae