Despite apparent morphological and ecological similarities, C. elata and C. reuteriana have disparate genetic structures and evolutionary histories, which may have originated from small ecological differences. Carex elata is broadly distributed throughout Europe, and its northern populations were recently founded, probably after the last glacial maximum. In contrast, C. reuteriana is an Ibero-North African endemic, with long-standing populations affected by isolation and limited gene flow. It is likely that high-density blocking effects and different gene-flow barriers act together to delimit its distribution and promote its relatively high population differentiation.
En este artículo se presentan numerosas novedades corológicas de interés, basadas en las colectas llevadas a cabo durante los años 2016 y 2017 en los pisos oro y crioromediteráneo de la sierra de Gredos, zonas que habían sido escasamente colectadas. Entre los resultados destacamos el hallazgo de Douinia ovata, desconocida de la región mediterránea española, y de Sciuro-hypnum reflexum y Tortula hoppeana, nuevos para el Sistema Central en su conjunto. Destacamos también 4 hepáticas y 24 musgos nuevos para la Comunidad Autónoma de Extremadura, así como otras no conocidas para la sierra de Gredos o las provincias de Ávila o Salamanca. Por último, se incluyen citas de nuevas poblaciones de briófitos muy raros en Gredos o el Sistema Central en su conjunto
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