%0 Journal Article %T Two new species of Lecanora sensu stricto (Lecanoraceae, Ascomycota) from east Africa %A Paul Kirika %A Sittiporn Parnmen %A Thorsten Lumbsch %J MycoKeys %D 2012 %I Pensoft Publishers %R 10.3897/mycokeys.3.3201 %X The new sorediate species Lecanora kenyana from Mount Kenya and L. orientoafricana from the Rift Valley in Kenya are described. L. kenyana has red-brown apothecia with a constricted base, a melacarpella¨Ctype amphithecium, pulicaris¨Ctype epihymenium, a hyaline hypothecium, and contains usnic acid as major constituent. L. orientoafricana is characterized bya dark hypothecium, pulicaris-type amphithecium, chlarotera-epihymenium, and contains atranorin and gangaleoidin. A phylogenetic analysis using maximum likelihood and a Bayesian approach based on DNA sequence data of mtSSU and ITS rDNA support that both new species belong to Lecanora sensu stricto and cluster with species containing usnic acid ora dark hypothecium, respectively. %K Kenya %K Lecanorales %K new species %K taxonomy %K tropical lichens %U http://www.pensoft.net/journals/mycokeys/article/3201/