Abstract
The generic name Aenigma Keller (2017a: 59) was established by the author with two twining species Aenigma patens Keller (2017a: 60) and A. micrantha Keller (2017a: 64) both from Misiones Province, Argentina, belonging to Apocynaceae. In the same year, Keller & Liede-Schumann (2017b) noticed that Bosse (1932: 27) has published a red algae genus, Enigma. To avoid phonetic homonym, the two authors published a replacement name Topea and established a new subtribe Topeinae Keller & Liede (2017b: 134) based on phylogenetic results. Szlachetko et al. (2022: 23) presented new phylogenetic research of Andinia-complex and they decided to elevate the former Andinia subgen. Aenigma (Luer) Karremans & Mark Wilson (2017: 121) to generic rank, namely Aenigma (Luer) Szlachetko & Kolanowska. A new later homonym is made because of unawareness.
References
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<p>Keller, H.A. (2017a) <em>Aenigma</em>, un género sudamericano de Apocynaceae (Asclepiadoideae) con tricomas vibrátiles en la corola. <em>Lilloa</em> 54 (1): 58–73.</p>
<p>Keller, H.A. & Liede-Schumann, S. (2017b) “The end of an enigma”, new subtribe and nomenclatural novelties in Asclepiadeae (Apocynaceae: Asclepiadoideae). <em>Bonplandia</em> 26 (2): 133–136. https://doi.org/10.30972/bon.2622572</p>
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<p>Szlachetko, D.L., Dudek, M., Naczk, A. & Kolanowska, M. (2022) Taxonomy and Biogeography of <em>Andinia</em>-Complex (Orchidaceae). <em>Diversity</em> 14: 1–29. https://doi.org/10.3390/d14050372</p>
<p>Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) <em>International Code of Nomenclature for algae, fungi and plants (Shenzhen Code)</em>. Regnum Vegetabile 159. Koeltz Scientific Books, Koenigstein. https://doi.org/10.12705/Code.2018</p>
<p>Weber-Van Bosse, A. (1932) <em>Algues</em>. <em>Mémoires du Musée Royal d’Histoire Naturelle de Belgique. Hors Série</em> 6 (1): 27, V plates.</p>
<p>Wilson, M., Frank, G.S., Jost, L., Pridgeon, A., Vieira-Uribe, S. & Karremans, A.P. (2017) Phylogenetic analysis of <em>Andinia</em> (Orchidaceae: Pleurothallidinae) and a systematic re-circumscription of the genus. <em>Phytotaxa </em>295 (2): 101–131. https://doi.org/10.11646/phytotaxa.295.2.1</p>
<p>Keller, H.A. (2017a) <em>Aenigma</em>, un género sudamericano de Apocynaceae (Asclepiadoideae) con tricomas vibrátiles en la corola. <em>Lilloa</em> 54 (1): 58–73.</p>
<p>Keller, H.A. & Liede-Schumann, S. (2017b) “The end of an enigma”, new subtribe and nomenclatural novelties in Asclepiadeae (Apocynaceae: Asclepiadoideae). <em>Bonplandia</em> 26 (2): 133–136. https://doi.org/10.30972/bon.2622572</p>
<p>Luer, C.A. (1979) <em>Icones Pleurothallidinarum</em>. Miscellaneous new species in the Pleurothallidinae. <em>Selbyana</em> 5: 145–194.</p>
<p>Luer, C.A. (1984) <em>Pleurothallis dalstroemii</em>, sp. nov. <em>Orchideer</em> 5: 52.</p>
<p>Luer, C.A. (1986) <em>Icones Pleurothallidinarum</em> III. Systematics of <em>Pleurothallis</em>. <em>Monographs in Systematic Botany from the Missouri Botanical Garden</em> 20: 1–109. https://doi.org/10.5962/bhl.title.149317</p>
<p>Luer, C.A. (1994) <em>Icones Pleurothallidinarum</em> XI. Systematics of <em>Lepanthes</em> subgenus <em>Brachycladium</em> and <em>Pleurothallis</em> subgenus <em>Aenigma</em>, subgenus <em>Elongatia</em>, subgenus <em>Kraenzlinella</em>. <em>Monographs in Systematic Botany from the Missouri Botanical Garden</em> 52: 1–68.</p>
<p>Luer, C.A. (2005) <em>Icones Pleurothallidinarum</em> XXVII: <em>Dryadella</em> and <em>Acronia</em> section <em>Macrophyllae-Fasciculatae</em>. <em>Monographs in Systematic Botany from Missouri Botanical Garden</em> 103: 1–311.</p>
<p>Ocupa-Horna, L., Vieira-Uribe, S., Ward, R., Brose, C. & Wilson, M. (2022) A new species of <em>Andinia</em> (Pleurothallidinae) from Peru and an updated phylogenetic analysis of the genus with emphasis on subgenus <em>Aenigma</em>. <em>Lankesteriana: International Journal on Orchidology</em> 22 (3): 241–262. https://doi.org/10.15517/lank.v22i3.53319</p>
<p>Ponert, J., Portilla Andrade, M., Chumová, Z. & Trávnícek, P. (2020) A new species of <em>Andinia</em> (Pleurothallidinae, Orchidaceae) with unusual bearded flowers from Ecuador. <em>Phytotaxa</em> 439 (1): 77–84. https://doi.org/10.11646/phytotaxa.439.1.5</p>
<p>Szlachetko, D.L., Dudek, M., Naczk, A. & Kolanowska, M. (2022) Taxonomy and Biogeography of <em>Andinia</em>-Complex (Orchidaceae). <em>Diversity</em> 14: 1–29. https://doi.org/10.3390/d14050372</p>
<p>Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) <em>International Code of Nomenclature for algae, fungi and plants (Shenzhen Code)</em>. Regnum Vegetabile 159. Koeltz Scientific Books, Koenigstein. https://doi.org/10.12705/Code.2018</p>
<p>Weber-Van Bosse, A. (1932) <em>Algues</em>. <em>Mémoires du Musée Royal d’Histoire Naturelle de Belgique. Hors Série</em> 6 (1): 27, V plates.</p>
<p>Wilson, M., Frank, G.S., Jost, L., Pridgeon, A., Vieira-Uribe, S. & Karremans, A.P. (2017) Phylogenetic analysis of <em>Andinia</em> (Orchidaceae: Pleurothallidinae) and a systematic re-circumscription of the genus. <em>Phytotaxa </em>295 (2): 101–131. https://doi.org/10.11646/phytotaxa.295.2.1</p>