1Biodiversity and Paleobiology Group, Agharkar Research Institute, G. G. Agarkar Road, Pune 411004,
2 Zoology Department, Government Post Graduate College, Dakpathar Vikasnagar, Dehradun 248125,
Museum of Natural History and Department of Ecology and Evolutionary Biology,University of Colorado
, Boulder 80309,
Energy and Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science,
Bangalore 560012, Karnataka, India
Citation: Balasubramanian Karthick, Rachna Nautiyal, J. Patrick Kociolek, T.V. Ramachandra. Two new species of Gomphonema (Bacillariophyceae)
from Doon Valley, Uttarakhand, India,Nova Hedwigia, Beiheft 144, p. 165–174 Article
Stuttgart, July 2015.
This paper describes two new Gomphonema species from the lesser Himalayas, India, with their
valve morphology using light and scanning electron microscopy. The two species, Gomphonema juettneriisp. nov. and G. doonensis sp. nov., were found in Nalota stream in Doon Valley of Uttarakhand State. Main
features of G. juettnerii are valve outline, shape of the areolae and striae pattern and presence of stigma.
Main features of G. doonensis are rounded headpole, striae made by doubly punctate striae and features
in central area. A detailed discussion on doubly punctate striae in members of gomphonemoid diatoms is
Key words: diatoms, Gomphonemoid, Himalayas, doubly punctate, Gomphoneis
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