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      A new species of pleurothallis (orchidaceae: pleurothallidinae) from Quito, Ecuador

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          Abstract

          Abstract A new species of Pleurothallis from Ecuador, Pleurothallis quitu-cara, is described, illustrated and compared with the similar species P.corysta. The new finding is a surprise for the orchid flora of Quito and its valleys.

          Translated abstract

          Resumen Una nueva especie de Pleurothallis de Ecuador, Pleurothallis quitu-cara se describe, ilustra y compara con la especie similar P. corysta. El hallazgo es una sorpresa para la flora orquidácea de Quito y sus valles.

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          Phylogenetic relationships in Pleurothallidinae (Orchidaceae): combined evidence from nuclear and plastid DNA sequences.

          A M Pridgeon, R. SOLANO, M Chase (2001)
          To evaluate the monophyly of subtribe Pleurothallidinae (Epidendreae: Orchidaceae) and the component genera and to reveal evolutionary relationships and trends, we sequenced the nuclear ribosomal DNA internal transcribed spacers (ITS1 and ITS2) and 5.8S gene for 185 taxa. In addition, to improve the overall assessments along the spine of the topology, we added plastid sequences from matK, the trnL intron, and the trnL-F intergenic spacer for a representative subset of those taxa in the ITS study. All results were highly congruent, and so we then combined the sequence data from all three data sets in a separate analysis of 58 representative taxa. There is strong support in most analyses for the monophyly of Pleurothallidinae and in some for inclusion of Dilomilis and Neocognauxia of Laeliinae. Although most genera in the nine clades identified in the analyses are monophyletic, all data sets are highly congruent in revealing the polyphyly of Pleurothallis and its constitutent subgenera as presently understood. The high degree of homoplasy in morphological characters, especially floral characters, limits their usefulness in phylogenetic reconstruction of the subtribe.
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            Genera Pleurothallidinarum: An updated phylogenetic overview of pleurothallidinae

            Adam P. Karremans (2016)
            Abstract:Subtribe Pleurothallidinae with just over 5000 species is possibly the most species-rich of all orchids. It has been growing steadily for more than two centuries, but the last three decades have been especially active in terms of systematic and phylogenetic studies in the group. The growth in species numbers has been accompanied by the marked increase in generic and infrageneric concepts. Nevertheless, Pleurothallidinae are plagued with cases of convergent and divergent morphology, and phylogenetic relatedness is not always apparent. This opens the door to controversial changes in generic circumscriptions that are considered too inclusive by some and too exclusive by others. A grave consequence of these disagreements is the difficulty of assessing which and how many species actually belong to each genus. Here an attempt is made to place generic names among their close relatives as a first step to re-evaluating the whole subtribe.
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              The number of known plants species in the world and its annual increase.

              M. Christenhusz, J. Byng, M. Christenhusz … (2016)
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                Author and article information

                Contributors
                Martín Carrera: Role: ND
                Luis Baquero: Role: ND
                Vlastimil Zak: Role: ND
                Journal
                Journal ID (publisher-id): lankesteriana
                Title: Lankesteriana
                Abbreviated Title: Lankesteriana
                Publisher: Lankester Botanical Garden, University of Costa Rica (Cartago, Cartago, Costa Rica, Costa Rica )
                ISSN (Electronic): 1409-3871
                Publication date (Print and electronic): August 2018
                Volume: 18
                Issue: 2
                Pages: 85-91
                Affiliations
                [1] orgnameUniversidad San Francisco de Quito Ecuador
                [3] orgnameJardín Botánico de Quito Ecuador
                [4] orgnameInstituto Nacional de Biodiversidad Ecuador
                [2] Quito orgnameUniversidad de Las Americas Ecuador
                Article
                Publisher ID: S1409-38712018000200085
                DOI: 10.15517/lank.v18i2.33398
                SO-VID: e65e5c95-21b6-4dcf-bd37-471acbd26880
                License:

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 International License.

                History
                Date received : 29 January 2018
                Date accepted : 14 May 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 22, Pages: 7
                Product

                SciELO Costa Rica


                Keywords: glenion,Acronia,Hoya de Quito,Pleurothallis quitu-cara,callus
                Data availability:
                Keywords: glenion, Acronia, Hoya de Quito, Pleurothallis quitu-cara, callus

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