Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico.
Stelis (Orchidaceae) encompasses approximately 1100 species of epiphytic orchids distributed throughout the Neotropics, with the highest diversity in Andean South America. Sixty-two species were recorded previously in Mexico.We formally describe here Stelis zootrophionoides as a new species from Chi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3492219?pdf=render |
| _version_ | 1818023876835147776 |
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| author | Sergio E Ramos-Castro Miguel Castañeda-Zárate Rodolfo Solano-Gómez Gerardo A Salazar |
| author_facet | Sergio E Ramos-Castro Miguel Castañeda-Zárate Rodolfo Solano-Gómez Gerardo A Salazar |
| author_sort | Sergio E Ramos-Castro |
| collection | DOAJ |
| description | Stelis (Orchidaceae) encompasses approximately 1100 species of epiphytic orchids distributed throughout the Neotropics, with the highest diversity in Andean South America. Sixty-two species were recorded previously in Mexico.We formally describe here Stelis zootrophionoides as a new species from Chiapas, Mexico. To determine its systematic position, we conducted a morphological comparison with other members of Pleurothallidinae and a phylogenetic analysis of nucleotide sequences from the plastid matK/trnK and trnL/trnF regions, as well as the nuclear ribosomal ITS region for 52 species of Pleurothallidinae. Sequences of 49 species were downloaded from GenBank and those of three species, including the new taxon, were newly generated for this work. The new species is described and illustrated; notes on its ecological preferences and a comparison with closely related species are presented.The new species, known only from one location and apparently restricted to the cloud forest in the central highlands of Chiapas, Mexico, is considered a rare species. This small epiphyte is unique among the Mexican species of Stelis by the combination of dark purple flowers with the distal third of the dorsal sepal adhered to the apices of the lateral sepals, which are partially united into a bifid synsepal, leaving two lateral window-like openings, and sagittate labellum. Stelis jalapensis, known from southern Mexico and Guatemala, also has the apices of the sepals adhered to each other, but it is distinguished by its larger flowers with lanceolate, acute dorsal sepal, completely fused lateral sepals (i.e. the synsepal is not bifid), and oblong-elliptic labellum. The phylogenetic analysis shows that S. zootrophionoides is closely related to other Mexican Stelis and corroborates previous suggestions that fused sepal apices have arisen independently in different lineages of Pleurothallidinae. |
| first_indexed | 2024-12-10T03:51:17Z |
| format | Article |
| id | doaj.art-4d4d4cf5692149fe89a69bcd9a35029b |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-10T03:51:17Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-4d4d4cf5692149fe89a69bcd9a35029b2022-12-22T02:03:14ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-01711e4882210.1371/journal.pone.0048822Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico.Sergio E Ramos-CastroMiguel Castañeda-ZárateRodolfo Solano-GómezGerardo A SalazarStelis (Orchidaceae) encompasses approximately 1100 species of epiphytic orchids distributed throughout the Neotropics, with the highest diversity in Andean South America. Sixty-two species were recorded previously in Mexico.We formally describe here Stelis zootrophionoides as a new species from Chiapas, Mexico. To determine its systematic position, we conducted a morphological comparison with other members of Pleurothallidinae and a phylogenetic analysis of nucleotide sequences from the plastid matK/trnK and trnL/trnF regions, as well as the nuclear ribosomal ITS region for 52 species of Pleurothallidinae. Sequences of 49 species were downloaded from GenBank and those of three species, including the new taxon, were newly generated for this work. The new species is described and illustrated; notes on its ecological preferences and a comparison with closely related species are presented.The new species, known only from one location and apparently restricted to the cloud forest in the central highlands of Chiapas, Mexico, is considered a rare species. This small epiphyte is unique among the Mexican species of Stelis by the combination of dark purple flowers with the distal third of the dorsal sepal adhered to the apices of the lateral sepals, which are partially united into a bifid synsepal, leaving two lateral window-like openings, and sagittate labellum. Stelis jalapensis, known from southern Mexico and Guatemala, also has the apices of the sepals adhered to each other, but it is distinguished by its larger flowers with lanceolate, acute dorsal sepal, completely fused lateral sepals (i.e. the synsepal is not bifid), and oblong-elliptic labellum. The phylogenetic analysis shows that S. zootrophionoides is closely related to other Mexican Stelis and corroborates previous suggestions that fused sepal apices have arisen independently in different lineages of Pleurothallidinae.http://europepmc.org/articles/PMC3492219?pdf=render |
| spellingShingle | Sergio E Ramos-Castro Miguel Castañeda-Zárate Rodolfo Solano-Gómez Gerardo A Salazar Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. PLoS ONE |
| title | Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. |
| title_full | Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. |
| title_fullStr | Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. |
| title_full_unstemmed | Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. |
| title_short | Stelis zootrophionoides (Orchidaceae: Pleurothallidinae), a new species from Mexico. |
| title_sort | stelis zootrophionoides orchidaceae pleurothallidinae a new species from mexico |
| url | http://europepmc.org/articles/PMC3492219?pdf=render |
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