摘要
The occurence of 52 species of lichens belonging to 25 genera and 14 families from Ultapani,Saralpara and Labanyapur of Ultapani Forest Range of Kokrajhar district,Assam(India)is provided.The majority of the species are crustose with 43 species,foliose with seven species and fruticose and squamulose with one species each.This study added two new records Ocellularia calvescens(Fée)Müll.Arg.and Rhabdodiscus subcavatus(Nyl.)Rivas Plata,Lücking&Lumbsch for the first time to the Indian lichen biota.The family Diploschistaceae and Graphidaceae show luxuriant growth in the area followed by Pyrenulaceae and Trichotheliaceae.The genera Ocellularia is dominant with seven species followed by Pyrenula and Porina with six and four species respectively.Among the three areas,Ultapani showed maximum diversity of lichens compared to the other two.The dominance of Diploschistaceae and Graphidaceae members indicates semi-evergreen and moist deciduous forest as well as smooth bark trees in the region that provides healthy forest with ecological continuity.
