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      On a noteworthy habitat type in the savannahs of Central Cuba and a remarkable new species of Elytraria (Acanthaceae)

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          Abstract

          A peculiar habitat type found in the savannahs of Central Cuba, Villa Clara Province and characterised by the presence of a surface gravel layer of “perdigones”, an assemblage of small ferralitic concretions, upon the “mocarrero” soil prevailing in the area, is described. On sterile gravel patches, only one species grows: Elytraria serpens , a new species described and named here. It is noteworthy for possessing long and wide creeping, stoloniform subterranean peduncles with apical gemmae developing into rooting leaf rosettes enabling vegetative propagation. The new species is close to E. shaferi and considered to derive from the latter by adaptive evolution, enabling it to survive in its hostile habitat, sheltered from the competition of other plant species. Small soil insects, for example, ants, are believed to act as pollinators.

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          Resumen

          Se describe un hábitat particular encontrado en la provincia Villa Clara, caracterizado por la presencia de una capa superficial de perdigones (pequeñas concreciones ferralíticas) que recubre el suelo mocarrero de aquella área. En los parches estériles con grava solo crece Elytraria serpens , nueva especie aquí descrita, notable por tener pedúnculos subterráneos largamente rastreros y reproducirse vegetativamente por yemas apicales que forman rosetas satélites que luego se enraízan. La nueva especie es afín a E. shaferi y se considera derivada de esta por evolución adaptativa, permitiéndole la colonización de un hábitat desfavorable, abrigada de la competencia de otras especies vegetales. Se opina probable la polinización por pequeños insectos terrícolas, p. ej. hormigas.

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          Most cited references 5

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          Notes on some endemic Cuban species of Ruelliinae (Acanthaceae), on their seeds, pollen morphology and hygroscopic features.

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            Notas sobre Acantáceas cubanas I. Oplonia y Elytraria.

             Borhidi (1978)
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              Notas sobre Acantáceas cubanas I. Oplonia y Elytraria.

               A. BORHIDI,  O MUÑIZ (1978)
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                Author and article information

                Contributors
                Journal
                PhytoKeys
                PhytoKeys
                3
                urn:lsid:arphahub.com:pub:F7FCE910-8E78-573F-9C77-7788555F8AAD
                PhytoKeys
                Pensoft Publishers
                1314-2011
                1314-2003
                2021
                13 May 2021
                : 177
                : 117-124
                Affiliations
                [1 ] Botanischer Grten und Botanisches Museum Berlin, FU Berlin, Germany Botanischer Grten und Botanisches Museum Berlin Berlin Germany
                [2 ] Jardín Botánico Nacional, Universidad de La Habana, La Habana, Cuba Universidad de La Habana La Habana Cuba
                Author notes
                Corresponding author: Werner Greuter ( w.greuter@ 123456bgbm.org )

                Academic editor: E. Fischer

                Article
                64764
                10.3897/phytokeys.177.64764
                8137652
                Werner Greuter, Rankin Rodríguez

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Acanthaceae
                Biogeography
                Evolutionary Biology
                Taxonomy
                Americas

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