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      A new species of Besleria (Gesneriaceae) from the Serranía El Pinche (Cauca), southwestern Colombia

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      PhytoKeys

      Pensoft Publishers

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          Abstract

          A new species of the genus Besleria (Gesneriaceae), endemic to the department of Cauca, Colombia, is described and illustrated here. The new species, Besleria santaclarensis Clavijo & Sánchez-Taborda, was discovered in the Regional Protective Forest Reserve “Serranía El Pinche”, Cordillera Occidental of the Colombian Andes. B. santaclarensis is distinguished by the epedunculate inflorescences, usually in the leafless axils near the base, with up to eight orange flowers, and by the magenta calyx that covers 2/3 of the corolla.

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          Most cited references 11

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          Temporal and spatial origin of Gesneriaceae in the New World inferred from plastid DNA sequences

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            Distinct Processes Drive Diversification in Different Clades of Gesneriaceae.

            Using a time-calibrated phylogenetic hypothesis including 768 Gesneriaceae species (out of [Formula: see text]3300 species) and more than 29,000 aligned bases from 26 gene regions, we test Gesneriaceae for diversification rate shifts and the possible proximal drivers of these shifts: geographic distributions, growth forms, and pollination syndromes. Bayesian Analysis of Macroevolutionary Mixtures analyses found five significant rate shifts in Beslerieae, core Nematanthus, core Columneinae, core Streptocarpus, and Pacific Cyrtandra These rate shifts correspond with shifts in diversification rates, as inferred by Binary State Speciation and Extinction Model and Geographic State Speciation and Extinction model, associated with hummingbird pollination, epiphytism, unifoliate growth, and geographic area. Our results suggest that diversification processes are extremely variable across Gesneriaceae clades with different combinations of characters influencing diversification rates in different clades. Diversification patterns between New and Old World lineages show dramatic differences, suggesting that the processes of diversification in Gesneriaceae are very different in these two geographic regions.
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              Are conservation strategies effective in avoiding the deforestation of the Colombian Guyana Shield?

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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                PhytoKeys
                PK
                Pensoft Publishers
                1314-2003
                1314-2011
                October 07 2020
                October 07 2020
                : 162
                : 71-80
                Article
                10.3897/phytokeys.162.55891
                © 2020

                http://creativecommons.org/licenses/by/4.0/

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