Summary
Matelea chacoensis Goyder was proposed as a replacement name for the illegitimate Gonolobus hirtus Griseb., a later homonym of G. hirtus (L.) R. Br. ex Schultes. However, the synonym Pseudibatia hirta Malme, which may be considered a legitimate replacement name, makes an earlier epithet available. The correct combination under Matelea is therefore M. hirta (Malme) Goyder.
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Goyder (2006: 32) proposed Matelea chacoensis Goyder as a replacement name for the illegitimate Gonolobus hirtus Griseb. (Grisebach 1879: 234), a later homonym of G. hirtus (L.) R. Br. ex Schultes (1820: 64). The name was adopted in the recent Southern Cone and Bolivian Checklists (Ezcurra et al. 2008: 1116; Fuentes & Morales 2014: 244). However, Pseudibatia hirta Malme (1905: 14), which may be considered a legitimate replacement name (McNeill et al. 2012: Art. 58.1), was included in synonymy (as P. hirta (Griseb.) Malme). The epithet is available in Matelea and takes priority over M. chacoensis — the formal combination is made below.
Matelea hirta (Malme) Goyder, comb. nov.
Basionym: Pseudibatia hirta Malme, Arkiv Bot. 4 (14): 14 (1905). Based on Gonolobus hirtus Griseb. (Grisebach 1879: 234), non G. hirtus (L.) R. Br. ex Schultes (1820: 64). Type: Argentina, Salta, “ad fl. Juramento”, Feb. 1873, Lorentz & Hieronymus 316 (holotype GOET; isotype LIL).
Synonym: Matelea chacoensis Goyder (2006: 32), nom. superfl.
References
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Goyder, D. J. (2006). Rojasia reinstated and six new names and combinations in Matelea (Apocynaceae: Asclepiadoideae). Kew Bull. 61: 31 – 33.
Grisebach, A. (1879). Asclepiadeae. In: Symbolae at floram argentinam, pp. 225 – 235. Dieterich'sche Verlags-Buchhandlung, Göttingen.
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Acknowledgements
I am grateful to both Rafaël Govaerts (RBG Kew) and Cecilia Ezcurra (BCRU, Bariloche, Argentina) for bringing this matter to my attention.
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Goyder, D.J. The correct name for Matelea chacoensis Goyder (Apocynaceae: Asclepiadoideae). Kew Bull 71, 23 (2016). https://doi.org/10.1007/s12225-016-9631-z
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DOI: https://doi.org/10.1007/s12225-016-9631-z