Calothrix marchica Lemmerm., Abh. Naturwiss. Vereins Bremen 23 (1): 248, f. 1 - 2. 1914; Desikachary, Cyanophyta 543, t. 114, f. 4. 1959.
var. marchica Distribution : Andhra Pradesh, Arunachal Pradesh, Assam, Chandigarh, Jammu & Kashmir, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Mizoram, Nagaland, Odisha, Rajasthan, Sikkim, Tamil Nadu, Tripura, Uttar Pradesh and West Bengal.
var. crassa C.B.Rao, Indian Acad. Sci., B. 6: 349, f. 2E. 1937; Desikachary, Cyanophyta 543, t. 113, f. 3 - 4. 1959. Distribution : Andhra Pradesh, Assam, Himachal Pradesh, Karnataka, Maharashtra, Rajasthan and Uttar Pradesh.
var. intermedia C.B.Rao, Proc. Indian Acad. Sci., B. 13, 9 6: 350, f. 2F - G. 1937; Desikachary, Cyanophyta 544, t. 113, f. 1 - 2. 1959. Distribution : Andhra Pradesh, Andaman & Nicobar, Assam, Karnataka, Kerala, Madhya Pradesh, Maharashtra and Uttar Pradesh.
:Note : One form was recognized by B.N.Prasad & R.K.Mehrotra (Blue-green algae of paddy fields of Uttar Pradesh. Phykos 19(1):
127, 1980). Since no name is assigned so not included here.
