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标题：Hidden in plain sight: a new species of pleurothallis (orchidaceae: pleurothallidinae) from colombia previously misidentified as pleurothallis luctuosa
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作者：Wilson ; Zhao, Kehan ; Hampson, Hailey 等
期刊名称：Lankesteriana
印刷版ISSN：1409-3871
出版年度：2019
卷号：19
期号：2
页码：77-91
DOI：10.15517/lank.v19i2.38584
出版社：Creative Commons
摘要：Pleurothallis tenuisepala, a new species in subsection Acroniae, is described and compared to Pleurothallis luctuosa with which it has previously been confused. While the two species are superficially similar, they can be very easily distinguished by the size of the flowers, which are approximately 60 mm long in P. tenuisepala versus approximately 29 mm long in P. luctuosa, or the length of the sepals, which are approximately four-times the length of the petals in P. tenuisepala versus less than twice the length of the petals in P. luctuosa. The two species can also be discriminated by their nuclear internal transcribed spacer (nrITS) sequences. Pleurothallis tenuisepala occurs on Isla Gorgona off the Pacific coast of Colombia and on the western slopes of the Cordillera Occidental of the Colombian Andes, while P. luctuosa is restricted to the Cordillera de Tilarán of Costa Rica. Labellar micromorphology of both species is discussed in relation to possible pollination mechanisms.
关键词：Acroniae;cryptic species;especies crípticas;labellum;morfología;morphology;taxonomía;taxonomy
其他关键词：cryptic species;especies crípticas;labellum;morfología;morphology;taxonomía;taxonom