The province Mazandaran covers 23,701 km² in northern Iran. It is composed of the northern slopes of the Alborz Mountain Range and coastal lowlands along the Caspian Sea. It is dominated by the green belt of the Hyrcanian vegetation zone, which stretches over the northern slopes of Alborz mountain ranges and covers the southern coasts of the Caspian Sea. Hyrcanian forests and high Alborz mountains contribute to a high diversity of lichens in this province.

Most of the collecting so far has been done in the surroundings of Amol, Sari, Ghaemshar, Ramsar, Lahijan, Chalos and Nuoshahr.

List of Species

1. Acarospora bullata
2. Anaptychia ciliaris
3. Anaptychia crinalis 
   
4. Arthonia cinnabarina
5. Arthonia endlicheri
6. Arthonia radiata
7. Arthothelium spectabile
8. Aspicilia farinosa
9. Bacidia rubella
10. Bacidia subacerina
11. Bactrospora dryina
12. Buellia retrovertens
13. Caloplaca aegyptiaca
14. Caloplaca cerina
15. Caloplaca flavorubescens
16. Caloplaca flavovirescens
17. Caloplaca holocarpa
18. Caloplaca salicina
19. Candelaria concolor
20. Candelariella vitellina
21. Cetrelia cetrarioides 
22. Cetrelia olivetorum
23. Chrysothrix candelaris
24. Cladonia awasthiana
25. Cladonia caespiticia
26. Cladonia chlorophaea
27. Cladonia coniocraea
28. Cladonia convoluta
29. Cladonia farinacea
30. Cladonia foliacea
31. Cladonia furcata
32. Cladonia subrangiformis
33. Cladonia pocillum
34. Cladonia pyxidata
35. Cladonia ramulosa
36. Cladonia rangiformis
37. Cladonia rei
38. Cladonia subulata
39. Cladonia symphycarpa
40. Collema crispum
41. Collema flaccidum
42. Collema furfuraceum
43. Collema fuscovirens
44. Collema subflaccidum
45. Collema tenax
46. Dermatocarpon miniatum
47. Dermatocarpon vellereum
48. Diploschistes muscorum
49. Diploschistes scruposus
50. Diplotomma alboatrum
51. Enterographa hutchinsiae
52. Evernia prunastri
53. Flavoparmelia caperata
54. Fulgensia bracteata
55. Graphis analoga
56. Graphis scripta
57. Hyperphyscia adglutinata
58. Immersaria iranica 
    
59. Lecania koerberiana
60. Lecania rechingeriana
61. Lecanora argentata
62. Lecanora argopholis
63. Lecanora campestris
64. Lecanora chlarotera
65. Lecanora dispersa
66. Lecanora thysanophora
67. Lecidella elaeochroma
68. Lecidella patavina
69. Lepraria crassissima
70. Lepraria diffusa
71. Lepraria lobificans
72. Leprocaulon microscopicum
73. Leptogium cyanescens
74. Leptogium lichenoides
75. Leptogium minutissimum
76. Leptogium saturninum
77. Leptogium teretiusculum
78. Lobaria pulmonaria
    
79. Melanohalea exasperatula
80. Milospium graphideorum
81. Myelochroa aurulenta
82. Nephroma parile
83. Nephroma resupinatum 
    
84. Ochrolechia pallescens
    
85. Opegrapha atra
86. Opegrapha vulgata
87. Parmelina tiliacea
    
88. Parmotrema perlatum
89. Peltigera canina
90. Peltigera lepidophora
91. Peltigera polydactylon
92. Peltigera praetextata
93. Pertusaria leptospora
94. Pertusaria multipuncta
95. Pertusaria pustulata
96. Phaeographis dendritica
97. Phaeophyscia ciliata
98. Phaeophyscia confusa
    
99. Phaeophyscia endophoenicea
100. Physcia biziana
     
101. Physcia tenella
102. Physconia distorta 
     
103. Porina aenea
104. Protoblastenia rupestris
105. Protoparmeliopsis muralis
     
106. Psora decipiens
107. Psorula rufonigra
108. Punctelia borreri
109. Punctelia subrudecta
110. Pyrenula chlorospila
111. Pyrenula nitida
112. Pyrenula subelliptica
113. Pyrgidium montellicum
114. Ramalina farinacea
115. Ramalina hyrcana
116. Ramalina pollinaria
117. Ramalina roesleri
118. Ramalina sinensis
119. Rhizocarpon disporum
120. Rhizocarpon geographicum
121. Rhizoplaca peltata
122. Sarcogyne clavus 
123. Sarcogyne regularis
124. Squamarina lentigera
125. Staurolemma omphalarioides
126. Tephromela atra
127. Toninia sedifolia
128. Trapelia coarctata
129. Usnea articulata
130. Usnea longissima 
     
131. Verrucaria fuscella
132. Verrucaria nigrescens
133. Xanthoparmelia conspersa
134. Xanthoparmelia pulla
135. Xanthoria elegans.
136. Xanthoria parietina