Completed:

1. Orchids of Arunachal Pradesh

2. Flora of Namdapha Biosphere Reserve

3. Flora of Lower Subansiri district, Arunachal Pradesh

4. Flora of Upper Subansiri district, Arunachal Pradesh

5. Materials for Flora of Arunachal Pradesh (vols 1, 2, 3)

6. Legumes of Arunachal Pradesh

7. Rhododendrons of Northeast India

8. Family Ericaceae of Arunachal Pradesh

9. Flora of Kurung Kumey district, Arunachal Pradesh

10. Flora of Anjaw Dist., Arunachal Pradesh

11. Flora of Upper Siang district, Arunachal Pradesh

12. Flora of West Siang district, Arunachal Pradesh

13. Flora of East Siang district, Arunachal Pradesh

14. Flora of Lohit district and Flora of Kamlang Wildlife Sanctuary, Arunachal   

     Pradesh with GIS mapping

15. Flora of East Kameng district, Arunachal Pradesh

16. Flora of West Kameng district, Arunachal Pradesh

17. Flora of Pakhui Wildlife Sanctuary and Tiger Reserve, East Kameng district

18. Balsams of Eastern Himalaya- A Regional Revision

19. Taxonomic Study of family Aspidiaceae of North East India

20. Taxonomic Study of family Polypodiaceae of North East India

21. Grass Flora of Arunachal Pradesh

22. Red listing of orchids of Arunachal Pradesh as per IUCN criteria

23. Flora of India, vol. 19 (Family Lentibulariaceae; Genus Veronica and Lagotis)

24. Flora of India, vol. 15 & 16

25. Materials for the Flora of Arunachal Pradesh, vol. 4

Running:

1. Taxonomic study of Fern family Pteridaceae of India.

2. Floristic studies in selected High Altitude Wetlands (HAWs) and its environs representing 5 districts of Arunachal Pradesh

3. Enumeration of RET specimens of Arunachal Pradesh