Fottea 2020, 20(2):128-136 | DOI: 10.5507/fot.2020.003

A new freshwater Gomphonema Ehrenberg (Bacillariophyta) species from Eastern Himalayas, India

Cheran Radhakrishnan1,2, Sudipta K. Das3, Vikas Kumar3, J. Patrick Kociolek4, Balasubramanian Karthick1,2,*
1 Biodiversity & Palaeobiology Group, Agharkar Research Institute, Pune, Maharashtra-400 004, India; *Corresponding author e-mail: karthickbala@aripune.org
2 Affiliated with the Department of Environmental Science, Savitribai Phule University of Pune, Ganeshkind, Pune, Maharashtra-411007, India
3 Central National Herbarium, Botanical Survey of India, Howrah, West Bengal-711 103, India
4 Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA

A new freshwater diatom species, Gomphonema adhikarii sp. nov., is described from a small road-side pool from the alpine region of Arunachal Pradesh, Eastern Himalayas, India. Detailed valve morphological features, based on both light and scanning electron microscopy, is presented and this taxon is compared with similar species. Gomphonema adhikarii has a distinct asymmetry about the apical axis and slightly bent foot pole area. The outline of the valve is slightly undulate, the valve centre is swollen and both apices are broadly rounded. This new species described from the Eastern Himalayas supports the idea of the area being rich in biodiversity, even with respect to the freshwater diatom flora.

Keywords: Gomphonema, Arunachal Pradesh, Tawang, Gomphonema adhikarii sp. nov.

Received: January 23, 2020; Accepted: April 8, 2020; Prepublished online: August 25, 2020; Published: October 14, 2020  Show citation

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Radhakrishnan, C., Das, S.K., Kumar, V., Patrick Kociolek, J., & Karthick, B. (2020). A new freshwater Gomphonema Ehrenberg (Bacillariophyta) species from Eastern Himalayas, India. Fottea, 20(2), 128-136. doi: 10.5507/fot.2020.003
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