2. & Ruther- A blue green algae new to India. Current Science 58: 1364-1365.
3. Ampili, P & Panikkar, M.V.N. 1989. Zygogonium kumaoense from Kerala. J. Econ. Tax. Bot. 13: 71-73.
4. Ampili, P. & Panikkar, M.V.N. 1994. Occurrence of Dichotomosiphon tuberosus (A. Dr.) Ernst from Kerala. Bionature 14: 51-52.
5. Panikkar, M.V.N. & Ampili, P. 1988. Temnogametum keralense a new species from South India. J. Econ. Tax. Bot.12:397-400.
6. Panikkar, M.V.N; Ampili, P. & V.D. Chauhan. 1980. Observations on Cephaleuros virescens Kunze from India. J. Econ. Tax. Bot. 15: 473-475.
7. Panikkar, M.V.N & Ampili P. 1990. Two terrestrial species of Oedogonium Link from Kerala, South India. Geobios new Reports. 18: 118-120.
8. Panikkar, M.V.N & Ampili P. 1991. Species of Temnogametum W. & G.S. West from Kerala, South India. Geobios new Reports. 10: 117-120.
9. Panikkar, M.V.N & Ampili P. 1992. A new species of Draparnaldiopsis Smith et Klyver (Chaetophorales, Chlorophyta) from Kerala. J. Econ. Tax. Bot. 16: 24-25.
10. Panikkar, M.V.N & Ampili P. 1992. Three new species of Oedogonium Link from the flowing waters of Kerala. J. Econ. Tax. Bot. 16: 223-225.
11. Panikkar, M.V.N & Ampili P. 1993. Cloniophora capitellata Martens from Kerala. J. Econ. Tax. Bot. 17: 460-461.
12. Panikkar, M.V.N & Ampili P. 1993. On the species of Vaucheria from Kerala. Bionature 13: 157-159.
13. Panikkar, M.V.N ; Usha Devi, K. & Ampili, P. 1997. New species of the genus Zygnemopsis (Skuja) Trans. (Zygnematales, Chlorophyceae.) from Kerala, India. J. Econ. Tax. Bot. 21: 143-148.
14. Panikkar, M.V.N, Usha Devi, K.& Ampili, P. 1997. A new species of Mougeotia
15. (Zygnematales, Chlorophyceae) from Kerala . J Econ. Tax. Bot. 21: 691-693.
16. Panikkar, M.V.N. & Ampili, P. 1993. Taxonomic studies on the South Indian Dictyotales.l. Dictyota Lamouroux J. Econ. Tax. Bot. 17: 708-709.
17. Panikkar, M.V.N; Sindhu, P & Ampili, P. 1998. On the occurrence of Laurencia elata
19. Panikkar, M.V.N; Ampili, P. & Chauhan V.D. 1991. Histichemical localization of polysaccharides in the tissues of three Indian Marine Algae. Phykos 30: 61-66.
20. Panikkar, M.V.N., P. Ampili & P. Sophiammal Nettar. 2006. Problems related to the identification of the Indian species of the genus Sargassum (Fucales, Sargassaceae, Seaweed Res. Utiln. 28 (1 & 2) 1-9.