Occurrence of 30 species of lichens belonging to 19 genera and 15 families in 12 localities of Bangalore city is reported .The Indian Institute of Science (IISc) campus and Lalbagh garden recorded the maximum number of 24 and 18 species of lichens respectively, which can be directly attributed to the presence of a variety of trees in the area providing diverse substrate of lichen growth. Heavy-metal accumulation in little prominent lichen of some localities is also analyzed. Cr. and Pb were maximum in Chrysothrix candelaries(L) Laundonat Amco batteries area with 95.29 and 623.95mg g-1 dry wt respectively. Fe and Cu were maximum in Bulbothrix isidiza(Nyl) Hale and Pyxine petricola Nyl. at IISc campus with 22721 and 338.12 mg g-1 dry wt respectively,while Lecanora perplexia Brodo at Lalbagh garden has 531.5mg g-1 dry wt. of Zn. The lichen flora of Lalbagh garden is compared to an earlier enumeration. It is interesting to note that in the last 18 years lichen flora of the area changed significantly, as only four species were common between the two studies. The past of urbanization together with pollution may be probably the reason for the change in lichen flora of this area. The present number type of lichen and the level of metals accumulated will be a record for conducting future biomonitoring studies in this fastest-growing city of India.