1. Balasubrahmanian, K.; Swarupanandan, K. and Sasidharan, N. (1985). Field key to the identification of indigenous arborescent species of Kerala forests. KFRI Report No: 33, KFRI, Peechi.
2. Beddome, R. H. (1978). The Flora Sylvatica for Southern India, Vols. 1-3. Periodical Expert Book Agency, D-42, Vivek Vihar, Delhi.
3. Blasco, F. (1971). Montagnes du sud de l’Inde: Forests, Savanes, Ecologie. Inst. Fr. Pondicherry, Trav. Sect. Sci. Tech. 10: 1-436.
4. Bourdillon, T.F. (1908). The Forest Trees of Travancore. Govt. Press, Trivandrum.
5. CESS. (1984). Resource Atlas of Kerala. Government of India and Centre for Earth Science and Studies (CESS), Thiruvananthapuram.
6. Champion, H.G. and Seth, S.K. (1968). A Revised Survey of the Forest Types of India. Govt. of India Press. p. 404.
7. Chipp, T.F. (1922). Buttresses as an assistance to identification. Kew Bull., 1922: 265-268. https://doi.org/10.2307/4129948
8. Dawkins, H.C. (1951). Graphical field keys of Ugandan trees. E. Agric. J. 17(2). https://doi.org/10.1080/03670074.1951.11664794
9. Fontenelle, G.B.; Costa, C.G. and Machado, R.D. (1994). Foliar anatomy and micromorphology of eleven species of Eugenia Linn. Botanical Journal of the Linnean Society, 116(2): 111-133. https://doi.org/10.1111/j.1095-8339.1994.tb00426.x
10. Fyson, P. F. (1915-1921). Flora of Nilgiri and Pulney Hill Tops, Vols. 1-3, Madras. Bishen Singh Mahendra Pal Singh, Dehra Dun.
11. Fyson, P.F. (1932). The Flora of South Indian Hill Stations. Vols. 1 & 2, Madras.
12. Gamble, J.S. and Fischer, C.E.C. (1916-1935). Flora of Presidency of Madras. Vol. I to III. Bishen Singh Mahendra Pal Singh, Dehra Dun.
13. Hooker, J.D. (1872-1897). The Flora of British India, Vol. I-VII. Reeve & Co. London.
14. Keller, R. (1996). Identification of Woody Plants in the Absence of Flowers and Fruits: A Field Guide. Birkhauser Verlag AG, Basel, Switzerland. https://doi.org/10.1007/978-3-0348-5110-7
15. Pascal, J.P. (1988). Wet Evergreen Forests of Western Ghats. Research Report. French Institute of Pondicherry. p. 253.
16. Pascal, J.P. and Ramesh, B.R. (1987). A Field Key to the Trees and Lianas of Evergreen Forests of Western Ghats, India. Institute Francaise de Pondichery, India. p. 236.
17. Puri, G.S.; Gupta, R.K.; Meher-Homji, V.M. and Puri, S. (1989). Forest Ecology, Vol.2. Oxford and IBH Publishing Company, New Delhi. pp. 50.
18. Ranganathan, C.R. (1938). Studies in the ecology of the shola grassland vegetation of the Nilgiri plateau. Indian Forester, 64: 523-541.
19. Sudhakara, K. (2001). Inventory and Computerized Herbarium of Higher plants in the Sholas of Munnar, Idukki District. In: Nair, K.K.N., Khanduri, S.K. and Balasubramanian, K. (Eds.). Shola forests of Kerala: Environment and Biodiversity. Kerala Forest Department, Thiruvananthapuram and Kerala Forest Research Institute, Peechi. pp. 179-208.
20. Symington, C.F. (1943). Forester's Manual of Dipterocarps. Malay. For. Rec. No. 16.
21. Vidyasagaran, K. and Gopikumar, K. (2001). Phytosociology and litter dynamics of the sholas of Wayanad District. In: Nair, K.K.N., Khanduri, S.K. and Balasubramanian, K. (Eds.). Shola forests of Kerala: Environment and Biodiversity. Kerala Forest Department, Thiruvananthapuram and Kerala Forest Research Institute, Peechi. pp. 287-316.
22. Whitmore, T.C. (ed.) (1972). Tree Flora of Malaya; A Manual for Foresters, 2 Vols. Longman, London.
23. Wood, G.H.S. (1952). Bark as a means of tree identification. J. Oxford Uni. For. Soc., 6: 15-27.
24. Yunus, M.; Yunus, D. and Iqbal, M. (1990). Systematic bark morphology of some tropical trees. Botanical Journal of the Linnean Society, 103(4): 367-377. https://doi.org/10.1111/j.1095-8339.1990.tb00196.x