Revision of Immersaria and a new lecanorine genus in Lecideaceae (lichenised Ascomycota, Lecanoromycetes) Author Xie, Cong-Miao https://orcid.org/0000-0001-9973-3594 Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China Author Wang, Li-Song CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Heilongtan, Kunming, Yunnan, 650204, China Author Zhao, Zun-Tian Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China Author Zhang, Yan-Yun https://orcid.org/0000-0002-0902-5066 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Heilongtan, Kunming, Yunnan, 650204, China Author Wang, Xin-Yu https://orcid.org/0000-0003-2166-6111 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Heilongtan, Kunming, Yunnan, 650204, China wangxinyu@mail.kib.ac.cn Author Zhang, Lu-Lu Institute of Environment and Ecology, Shandong Normal University, Jinan, Shandong, 250014, China 612038@sdnu.edu.cn text MycoKeys 2022 2022-02-15 87 99 132 http://dx.doi.org/10.3897/mycokeys.87.72614 journal article http://dx.doi.org/10.3897/mycokeys.87.72614 1314-4049-87-99 462A78A6A4745A33A766A2045115F58F Lecaimmeria mehadiana (Calatayud & Rambold) C.M. Xie comb. nov. Basionyms. Immersaria mehadiana Calat & Rambold, Lichenologist 30(3): 233 (1998). Type . Romania . Caras-Severin Comitat, Mehadia , Strajot Mtn., on rock, 1994, Rambold, G.W. , M0101781 (M-holotype!), M0101780, M0101782, M0101783 (M-isotype!). High-resolution photographs seen . Description. Calatayud and Rambold (1998) . Notes. As " Immersaria " Immersaria mehadiana has lecanorine apothecia and resembles L. lygaea and L. cupreoatra , having a dark brown thallus, it is, therefore, transferred to Lecaimmeria . This species is characterised by its greyish prothallus, dark brown apothecia and the brown epihymenium. It is only known from Romania ( Calatayud and Rambold 1998 ).