Areas studied for moss floras in the Yana-Indigirka floristic region (Yyi). Each area includes a number of localities along 100–300 km field trips, with more exact collecting sites provided in respective publications for each of them: 1 Yudoma-Maya Plateau and Tarbagannakh Mountain (Ignatov et al. 2001); 2 Mus-Khaya Peak surroundings (Ignatova et al. 2011); 3 Sette-Daban Range (Ignatova et al. 2018); 4 Suntar-Khayata Nature Reserve (Ivanova et al. 2016); 5 Ust-Nera area (Ivanova et al. 2018); 6 Ulakhan-Chistai Range (Ignatova et al. 2020); 7 Orulgan Range around upper course of the Tumara River (Ignatov et al. 2014); 8 Yana-Adycha Plateau (Isakova 2010).