Invited Lecture / Session Chaired 1. “Medicinal Pteridophytes as experimental tool-their present status and future prospect ” Pteridological studies in India: in Perspective and modern approaches in relation to environment and climate change:BSI, Itanagar in collaboration with IFS, Chandigarh, National
2. “Fern gametophyte: a model system of research tool for morphology to molecule” Workshop on Advanced Technologies in Botany Teaching and Research Prabir Chaterjee Research Foundation & CAS, Dept. of Botany, Calcutta University (National)
3.Seedless vascular plants: workout, description and major character of identification Workshop On 05.03.18-12.03.18 AICOPTAX, MOEF & CC & CAS, Dept. of Botany, Calcutta University, National
4. Seedless vascular plants: workout, description and major character of identification Workshop On 05.03.18-12.03.18 AICOPTAX, MOEF & CC & CAS, Dept. of Botany, Calcutta University National
4.Seedless vascular plants: workout, description and major character of identification Workshop 0n 5-12 Dec. 2018 AICOPTAX, MOEF & CC & CAS, Dept. of Botany, Calcutta University National
5. Seedless vascular plants: workout, description and major character of identification Workshop On 29 Jan.-5 Feb.2019 AICOPTAX, MOEF & CC & CAS, Dept. of Botany, Calcutta University National
5.Spore and gametophyte of ferns as experimental tool: some recent contribution International Conference of “Next generation Pteridology:The Indian Perspective” DBNDSM, Hatgovindapur & IFS, Chandigarh International
6.Chairing the session in Academic Session:1 On 08/03/19 International Conference of “Next generation Pteridology:The Indian Perspective” DBNDSM, Hatgovindapur & IFS, Chandigarh International
7.Chairing the session in Academic Session:9 0n 09/03/19 International Conference of “Next generation Pteridology:The Indian Perspective DBNDSM, Hatgovindapur & IFS, Chandigarh (International)
8. Invited Speaker World Environment Day Celebration, 2021 Dept. Of Botany, SKVU, (National)
9. Invited Speaker Plantae: essentials of Botany, Dept. Of Botany, Calcutta University (National)