1. Awasthi, D.D. (1982). Lichen genus Cetraria in India and Nepal. Bull. Bot. Suv. India, 24: 1-27
2. Awasthi, D.D. (1987). A new position for Platysma thomsonii Stirton. J. Hattori Bot. Lab., 63: 367-372.
3. Awasthi, D.D. (1988). A key to the macrolichens of India and Nepal. J. Hattori Bot. Lab., 65: 207-302.
4. Culberson, W.L. & Culberson, C.F. (1968). The lichen genera Cetrelia and Platismatia (Parmeliaceae). Contr. U.S. nat. Herb., 34: 449-558.
5. Elix, J.A. (1993). Progress in the generic delimitation of Parmelia sensu lato, Lichens (Ascomycotina: Parmeliaceae) and a synoptic key to Parmeliaceae. The Bryologist, 96(3): 359-383. https://doi.org/10.2307/3243867
6. Elix, J.A. (1994). In: Flora of Australia. Vol. 55: 1-349. https://doi.org/10.1080/00062278.1994.10554770
7. Elix, J.A. & Hale, M.E. (1987). Canomaculina, Myelochroa, Parmelinella, Parmelinopsis and Parmotremopsis five new genera in the Parmeliaceae (lichenized Ascomycotina). Mycotaxon, 29: 233-244.
8. Elix, J.A. & Johnston, J. (1988). New species and new reports of Flavoparmelia (lichenized Ascomycotina) from southern Hemisphere. Mycotaxon, 33: 391-400.
9. Elix, J.A., Johnston, J. & Verdon, D. (1986). Canoparmelia, Paraparmelia and Relicinopsis, three new genera in the Parmeliaceae (lichenized Ascomycotina). Mycotaxon, 27: 372-383.
10. Esslinger, T.L. (1977). A chemosystematic revision of the brown Parmeliae. J. Hattori Bot. Lab., 42: 1-211.
11. Esslinger, T.L. (1978). A new status for the brown Parmeliae. Mycotaxon, 7: 45-54. https://doi.org/10.5962/p.417816
12. Esslinger, T.L. (1987). A new species of Melanelia from Nepal. Mycotaxon, 28: 215-217.
13. Hale, M.E. (1965). A monograph of Parmelia subgenus Amphigymnia. Contr. U.S. nat. Herb., 36: 193-358.
14. Hale, M.E. (1972). Four new species of Parmelia (lichens) from India and Philippines. The Bryologist, 75(1): 97-101. https://doi.org/10.2307/3241534
15. Hale, M.E. (1974a). New combinations in the lichen genus Parmotrema Müll. Arg. Phytologia, 28: 334-339.
16. Hale, M.E. (1974b). Delimitation of the lichen genus Hypotrachyna (Vainio) Hale. Phytologia, 28: 340-341.
17. Hale, M.E. (1974c). Bulbothrix, Parmelina, Relicina and Xanthoparmelia four new genera in the Parmeliaceae. Phytologia, 28: 479-490.
18. Hale, M.E. (1975a). A revision of the lichen genus Hypotrachyna (Parmeliaceae) in tropical America. Smithsonian Contr. Bot., 25: 1-73. https://doi.org/10.5479/si.0081024X.25
19. Hale, M.E. (1975b). A monograph of the lichen genus Relicina (Parmeliaceae). Smithsonian Contr. Bot., 26: 1-32. https://doi.org/10.5479/si.0081024X.26
20. Hale, M.E. (1976a). Synopsis of a new lichen genus Everniastrum Hale. Mycotaxon, 3: 345-353. https://doi.org/10.5962/p.413990
21. Hale, M.E. (1976b). A monograph of the lichen genus Bulbothrix Hale (Parmeliaceae) Smithsonian Contr. Bot., 32: 1-29. https://doi.org/10.5479/si.0081024X.32
22. Hale, M.E. (1976c). A monograph of the lichen genus Parmelina Hale (Parmeliaceae). Smithsonian Contr. Bot., 33: 1-60. https://doi.org/10.5479/si.0081024X.33
23. Hale, M.E. (1984). Flavopunctelia, a new genus in the Parmeliaceae (Ascomycotina). Mycotaxon, 20: 681-682.
24. Hale, M.E. (1986). Flavoparmelia, a new genus in the lichen family Parmeliaceae (Ascomycotina). Mycotaxon, 25: 603-605.
25. Hale, M.E. (1987). A monograph of the lichen genus Parmelia Acharius senso stricto (Ascomycotina: Parmeliaceae). Smithsonian Contr. Bot., 66: 1-55. https://doi.org/10.5962/bhl.title.122568
26. Hale, M.E. (1990). A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina: Parmeliaceae). Smithsonian Contr. Bot., 74: 1-250. https://doi.org/10.5962/bhl.title.123253
27. Hale, M.E. & Fletcher, A. (1990). Rimelia Hale & Fletcher, a new lichen genus (Ascomycotina: Parmeliaceae). The Bryologist, 93: 23-29. https://doi.org/10.2307/3243542
28. Hale, M.E. & Kurokawa, S. (1964). Studies on Parmelia subgenus Parmelia. Contr. U.S. nat. Herb., 36(4): 131-191.
29. Hale, M.E. & Patwardhan, P.G. (1974). Two new species of Hypotrachyna (lichens) from India. The Bryologist, 77(4): 637-639. https://doi.org/10.2307/3241813
30. Karnefelt, I. (1979). The brown fruticose species of Cetraria. Opera Botanica, 46: 1-150.
31. Karnefelt, I. (1986). The genera Bryocaulon, Coelocaulon and Cornicularia and formerly associated taxa. Opera Botanica, 86: 1-90.
32. Karnefelt, I. Thell, A., Randlane, T. & Saag, A. (1994). The genus Flavocetraria Karnef. & Thell (Parmeliaceae, Ascomycotina) and its affinities. Acta Bot. Fennica, 150: 79-96.
33. Krog, H. (1982). Punctelia, a new lichen genus in the Parmeliaceae. Nord. J. Bot., 2: 287-292. https://doi.org/10.1111/j.1756-1051.1982.tb01191.x
34. Kurokawa, S. (1980). Cetrariopsis, a new genus in the Parmeliaceae and its distribution. Memoir. Nat. Sci. Mus. Tokyo, 13: 139-142.
35. Kurokawa, S. (1988). Species of Anaptychia and Parmelia collected in Kathmandu area. In: Cryptogams of the Himalayas Vol. I. The Kathmandu Valley Watanbe and Malla (Eds.). Nat. Sci. Mus. Tsukuba. pp. 155-160.
36. Kurokawa, S. (1991). Rimeliella, a new lichen genus related to Rimelia of Parmeliaceae. Ann. Tsukuba Bot. Gard., 10: 1-14.
37. Kurokawa, S. & Lai, M.J. (1991). Allocetraria, a new lichen genus in the Parmeliaceae. Bull. Nat. Sci. Mus. Tokyo, ser. B (Bot.)17: 59-65.
38. Kurokawa, S. & Mineto, M. (1973). Enumeration of Parmeliae of Ceylon. Ann. Rep. Nota Marine Lab., 13: 71-76.
39. Lai, M.J. (1980). Studies on the Cetrarioid lichens in the Parmeliaceae of East Asia. I. Quart. J. Taiwan Mus., 33: 215-229.
40. Leuchert, C. & Poelt, J. (1977). Rhizoplaca In: J. Poelt & A. Vezda (eds.) Bestimmingsschussel europaischer Flechten. Erganzungsheft I. Vadaz. pp, 233-235.
41. Mattisson, J.E. & Lai, M.J. (1993). Vulpicida, a new genus in the Parmeliaceae (lichenized Ascomycetes). Mycotaxon, 46: 425-428.
42. Randlane, T. & Saag, A. (1992a). Additional data about the genus Nephromopsis (Lichens, Parmeliaceae). Mycotaxon, 44: 485-589.
43. Randlane, T. & Saag, A. (1992b). New combinations of some Cetrarioid lichens (Parmeliaceae). Mycotaxon, 44: 491-493.
44. Sharma, L.R. & Kurokawa, S. (1990a). Species of Anaptychia and Parmelia collected in Nepal. In: M. Watanbae & Malla (eds.) Cryptogams of Himalayas. Vol. 2, Central and Eastern Nepal. Nat. Sci. Mus Tsukuba, Japan. pp. 113-116.
45. Sharma, L.R. & Kurokawa, S. (1990b). Species of Xanthoparmelia in Nepal. Journ. Jap. Bot., 65: 58-60.
46. Singh, K.P. & Sinha, G.P. (1994). Lichen flora of Nagaland. Bishen Singh Mahendra Pal Singh, Dehra Dun, pp. 498.
47. Tehler, A. (1996). Systematics, phylogeny and classification. In: T.H. Nash (ed.) Lichen Biology. Cambridge University Press. pp. 217-239.
48. Zahlbruckner, A. (1926). ‘Lichenes’ In: Engler & Prantl (eds.) Naturl. Pflanzenfam. 2 ed. Bd. 8. Leipizig.
49. Zahlbruckner, A. (1930). Catalogus Lichenum Universalis Vol. 6: 1-618. (Johnson Reprint Corporation, New York).