Two new species of Gomphonema (Bacillariophyceae)
from Doon Valley, Uttarakhand, India
Balasubramanian Karthick 1*,   Rachna Nautiya1,2,   J. Patrick Kociolek3 ,  T. V. Ramachandra4

1Biodiversity and Paleobiology Group, Agharkar Research Institute, G. G. Agarkar Road, Pune 411004, Maharashtra, India
2 Zoology Department, Government Post Graduate College, Dakpathar Vikasnagar, Dehradun 248125, Uttarakhand, India

3Museum of Natural History and Department of Ecology and Evolutionary Biology,University of Colorado , Boulder 80309,
4Energy 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

*Corresponding Author :
T.V Ramachandra,
Centre for Sustainable Technologies, Indian Institute of Science,
Bangalore 560 012, India.
Tel: 91-080-23600985 / 2293 3099/ 2293 2506, Fax: 91-080-23601428 /23600085 /2360685 (CES TVR).
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