Some desmids (Chlorophyceae) from north-eastern Uttar Pradesh, India

Thirty eight desmidian taxa belonging to family Desmidiaceae of class Chlorophyceae are reported and discussed. Genera are Euastnim Ehrenberg (3 sp. and 1 var.), Cosmarium Corda ex Ralfs (14 sp.,7 var. and 2 forms), Onychonema Wallich (1 var.), Desmidium Agardh (1sp.), Spondylosium Breb.(lform), Micrasterias Agardh (4sp.) Staurastrum Mayen (1 var., 1 form) and Arthrodesmus Ehrenberg (1sp.and 1 form). Morpho-taxonomy and descriptions of taxa are based on cell walls structure, shape and size of semi cells/ isthmus. Two species of genus Euastrum and one species of Cosmarium have been described under open nomenclature. These desmidian algae are being reported from Bahraich,Shrawasti and Gonda districts of North-Eastern Uttar Pradesh and they constitute new records for the area.