To be, or not to be a Stelis
Despite the availability of multiple sources of evidence and consistency in the support for a broadly circumscribed Stelis Sw. (Orchidaceae: Pleurothallidinae), some authors continue to be hesitant in its use. It is certain that the more typical species of Stelis, with their triangular, flattish flo...
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| Formato: | Online |
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Universidad de Costa Rica
2019
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/40082 |
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LANKESTERIANA400822022-09-01T22:31:12Z To be, or not to be a Stelis To be, or not to be a Stelis Karremans, Adam P. convergence evolutionary history floral morphology generic circumscription Pleurothallidinae pollinator adaptation Despite the availability of multiple sources of evidence and consistency in the support for a broadly circumscribed Stelis Sw. (Orchidaceae: Pleurothallidinae), some authors continue to be hesitant in its use. It is certain that the more typical species of Stelis, with their triangular, flattish flowers with very short fleshy petals and lip, form a monophyletic group that is easily recognized. However, it is likewise undisputed that they are not an isolated lineage in the subtribe and that several groups of species with a similar vegetative habit but that lack the typical Stelis flower are in fact very close relatives, sharing a relatively recent common ancestor. Those species groups need to be classified in a way that also reflects their own evolutionary history, and alternatives to a broadly circumscribed Stelis are possible yet neither straightforward or practical at this time. An infrageneric classification for the whole group is provided here in an attempt to clarify which species actually belong where in this highly complex affinity. Emphasis is made on the difficulty of diagnosing the less typical members of each proposed subgenus or section, and on the importance of floral convergence and divergence as a result of pollinator adaptation. As here defined, Stelis is the largest genus in the Pleurothallidinae, with 1243 species. Despite the availability of multiple sources of evidence and consistency in the support for a broadly circumscribed Stelis Sw. (Orchidaceae: Pleurothallidinae), some authors continue to be hesitant in its use. It is certain that the more typical species of Stelis, with their triangular, flattish flowers with very short fleshy petals and lip, form a monophyletic group that is easily recognized. However, it is likewise undisputed that they are not an isolated lineage in the subtribe and that several groups of species with a similar vegetative habit but that lack the typical Stelis flower are in fact very close relatives, sharing a relatively recent common ancestor. Those species groups need to be classified in a way that also reflects their own evolutionary history, and alternatives to a broadly circumscribed Stelis are possible yet neither straightforward or practical at this time. An infrageneric classification for the whole group is provided here in an attempt to clarify which species actually belong where in this highly complex affinity. Emphasis is made on the difficulty of diagnosing the less typical members of each proposed subgenus or section, and on the importance of floral convergence and divergence as a result of pollinator adaptation. As here defined, Stelis is the largest genus in the Pleurothallidinae, with 1243 species. Universidad de Costa Rica 2019-12-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/40082 10.15517/lank.v19i3.40082 Lankesteriana: International Journal on Orchidology; 2019: Lankesteriana: Volumen 19, Número 3; 281–343 Lankesteriana: International Journal on Orchidology; 2019: Lankesteriana: Volumen 19, Número 3; 281–343 2215-2067 1409-3871 eng https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/40082/40968 |
| institution |
Universidad de Costa Rica |
| collection |
Lankesteriana: International Journal on Orchidology |
| language |
eng |
| format |
Online |
| author |
Karremans, Adam P. |
| spellingShingle |
Karremans, Adam P. To be, or not to be a Stelis |
| author_facet |
Karremans, Adam P. |
| author_sort |
Karremans, Adam P. |
| description |
Despite the availability of multiple sources of evidence and consistency in the support for a broadly circumscribed Stelis Sw. (Orchidaceae: Pleurothallidinae), some authors continue to be hesitant in its use. It is certain that the more typical species of Stelis, with their triangular, flattish flowers with very short fleshy petals and lip, form a monophyletic group that is easily recognized. However, it is likewise undisputed that they are not an isolated lineage in the subtribe and that several groups of species with a similar vegetative habit but that lack the typical Stelis flower are in fact very close relatives, sharing a relatively recent common ancestor. Those species groups need to be classified in a way that also reflects their own evolutionary history, and alternatives to a broadly circumscribed Stelis are possible yet neither straightforward or practical at this time. An infrageneric classification for the whole group is provided here in an attempt to clarify which species actually belong where in this highly complex affinity. Emphasis is made on the difficulty of diagnosing the less typical members of each proposed subgenus or section, and on the importance of floral convergence and divergence as a result of pollinator adaptation. As here defined, Stelis is the largest genus in the Pleurothallidinae, with 1243 species. |
| title |
To be, or not to be a Stelis |
| title_short |
To be, or not to be a Stelis |
| title_full |
To be, or not to be a Stelis |
| title_fullStr |
To be, or not to be a Stelis |
| title_full_unstemmed |
To be, or not to be a Stelis |
| title_sort |
to be, or not to be a stelis |
| title_alt |
To be, or not to be a Stelis |
| publisher |
Universidad de Costa Rica |
| publishDate |
2019 |
| url |
https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/40082 |
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AT karremansadamp tobeornottobeastelis |
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