15 Bot. complut. 43, 2019: 15-40 Botanica Complutensis ISSN-e: 1988-2874 http://dx.doi.org/10.5209/BOCM.63970 Diversity of Albanian Cladoniaceae Ana Rosa Burgaz 1 , Sandra Luna-González 1 , Blanca Gutiérrez-Larruga 1 , Raquel Pino-Bodas 2 , László Lőkös 3 & Edit Farkas 4 Recibido: 2019 / Aceptado: Abstract. As a result of collections made during the years 2009-2017, the number of Cladoniaceae species is enlarged to 27 species, providing ffteen new records to Albanian Cladonia. The distribution of many of the previously mentioned taxa is extended and the chemical variability for many of the species is discussed. Cladonia borealis, C. caespiticia, C. cervicornis, C. coccifera, C. conista, C. cryptochlorophaea, C. cyathomorpha, C. humilis, C. merochlorophaea, C. parasitica, C. peziziformis, C. polycarpoides, C. ramulosa, C. rei and C. subulata are new for Albania. Key words. Cladonia; Albania; phytogeography. [es] Diversidad de las Cladoniaceae de Albania Resumen. Como consecuencia de las recolecciones efectuadas en varios periodos durante los años 2009-2017, se amplía a 27 especies el número de Cladoniaceae, además se aportan 15 nuevas especies de Cladonia para Albania. Se amplía la distribución de muchos de los taxones citados con anterioridad y se discute la variabilidad química en la mayoría de las especies encontradas. Cladonia borealis, C. caespiticia, C. cervicornis, C. coccifera, C. conista, C. cryptochlorophaea, C. cyathomorpha, C. humilis, C. merochlorophaea, C. parasitica, C. peziziformis, C. polycarpoides, C. ramulosa, C. rei y C. subulata son nuevas para Albania. Palabras clave. Cladonia; Albania; ftogeografía. 1 Department of Biodiversity, Ecology and Evolution (Botany Unit), Faculty of Biology, Complutense University, E-28040 Madrid, Spain. Corresponding author, e-mail: arburgaz@ucm.es 2 Comparative Plant and Fungal Biology Department, Royal Botanic Gardens Kew, TW9 3AB, Richmond, Surrey, UK. r.pino@kew.org 3 Department of Botany, Hungarian Natural History Museum, H-1431 Budapest, Pf. 137, Hungary. lokos.laszlo@nhmus.hu 4 Institute of Ecology and Botany, MTA Centre for Ecological Research, Hungarian Academy of Sciences, H-2163 Vácrátót, Alkotmány u. 2-4, Hungary. farkas.edit@okologia.mta.hu ARTÍCULOS Introduction Albania is a Mediterranean country located in SE Europe and surrounded by the Adriatic Sea and Montenegro in the NW, by the Ionian Sea and Greece in the SW and North Macedonia in the East. Despite its small extension, 28,748 km 2 , it is topographically very diverse. Al- though Albania lies within the temperate zone the topographic heterogeneity and the combi- nation of Mediterranean and continental infu- ences confer a great climatic and vegetation diversity (Reed et al. 2004). The main mountain ranges in the country, the Dinaric Alps, run parallel to the coast and they present the highest peak at 2753 m (Mt. Korab). The coastal region has a Mediterra- nean climate, and further east the mountains act as a barrier to the penetration of temperate air masses. The climate of the mountainous re- gions is alpine, with strong changes in precip- itation and temperature depending on height and exposure. The temperature differences between the coast and the interior regions are more marked in winter, while the precip- itations are more intense in summer (Tatli & Türkeş 2014). The karstic soils (limestones) are predom- inant, although there are locations with ser- pentine substrates containing a certain amount of silicates, yeilding slightly acid soils (Bego et al. 2018). Most of the Albanian territory is included in the Illyrian province of the Circumboreal