Nitzschia imae sp. nov. (Bacillariophyta, Nitzschiaceae) from Iceland, with a redescription of Hannaea arcus var. linearis

  1. Álvarez Blanco, Irene
  2. Blanco Lanza, Saúl
Revista:
Anales del Jardín Botánico de Madrid

ISSN: 0211-1322

Año de publicación: 2013

Volumen: 70

Número: 2

Páginas: 144-151

Tipo: Artículo

DOI: 10.3989/AJBM.2358 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Otras publicaciones en: Anales del Jardín Botánico de Madrid

Resumen

A partir de muestras obtenidas en el campo, se han estudiado dos especies de diatomeas de Islandia mediante microscopía óptica y electrónica, siendo descrita una de ellas como nueva para la ciencia y realizándose una descripción enmendada y un cambio nomenclatural para la segunda. Se presenta una discusión de las características morfológicas de estos táxones y sus afinidades taxonómicas con especies similares. Nitzschia imae es descrita en la Laguna Azul, en el suroeste de Islandia. Los principales criterios de diagnóstico incluyen la presencia de dos diferentes morfotipos de la especie, uno con ápices apuntados y otro con forma valvar ligeramente asimétrica y ápices redondeados. Adicionalmente, se propone una descripción enmendada de Hannaea arcus var. linearis ya que no hay concordancia entre las características morfométricas propuestas en el protólogo y la ilustración del tipo del taxón.

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