Additional new species and new records of the genus Sticta (lichenised Ascomycota, lobarioid Peltigeraceae) from Bolivia Author Ossowska, Emilia Anna https://orcid.org/0000-0002-1357-6071 Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdansk, Wita Stwosza 59, PL- 80 - 308 Gdansk, Poland emilia.ossowska@ug.edu.pl Author Moncada, Bibiana https://orcid.org/0000-0001-9984-2918 Licenciatura en Biologia, Universidad Distrital Francisco Jose de Caldas, Cra. 4 No. 26 D- 54, Torre de Laboratorios, Herbario, Bogota D. C., Colombia & Research Associate, Science & Education, The Field Museum, 1400 South Lake Shore, Chicago, IL 60605, USA & Botanischer Garten und Botanisches Museum Berlin, Freie Universitaet Berlin, Koenigin-Luise-Strasse 6 - 8, 14195 Berlin, Germany Author Luecking, Robert https://orcid.org/0000-0002-3431-4636 Research Associate, Science & Education, The Field Museum, 1400 South Lake Shore, Chicago, IL 60605, USA & Botanischer Garten und Botanisches Museum Berlin, Freie Universitaet Berlin, Koenigin-Luise-Strasse 6 - 8, 14195 Berlin, Germany Author Flakus, Adam https://orcid.org/0000-0002-0712-0529 W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL- 31 - 512 Krakow, Poland Author Rodriguez-Flakus, Pamela https://orcid.org/0000-0001-8300-5613 W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL- 31 - 512 Krakow, Poland Author Olszewska, Sandra 10 th High School in Gdynia, Wladyslawa IV, PL- 81 - 384 Gdynia, Poland Author Kukwa, Martin https://orcid.org/0000-0003-1560-909X Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdansk, Wita Stwosza 59, PL- 80 - 308 Gdansk, Poland text MycoKeys 2024 2024-04-23 105 21 47 http://dx.doi.org/10.3897/mycokeys.105.120810 journal article http://dx.doi.org/10.3897/mycokeys.105.120810 1314-4049-105-21 916EA2BA8A015929AF2870E9076369D2 Sticta tomentosa (Sw.) Ach. Fig. 8 Description. For a description, see Moncada (2012) and Moncada et al. (2021a) . Habitat and distribution. The record of S. tomentosa given here is the first from Bolivia supported by a DNA sequence. The taxon was previously reported from the country by Nylander (1859 , 1861 ) and Herzog (1922) . The specimen examined here was found on tree bark in in the lower montane Yungas cloud forest in the Cochabamba Department. Outside Bolivia, S. tomentosa has been reported from South and North America ( Galloway 1995 ; Moncada 2012 ) and Africa ( Galloway 1995 ; Kaasalainen et al. 2023 ). Notes. Sticta tomentosa has palmate, bluish thalli with white cilia, abundant, submarginal apothecia with entire to crenate margins; the lower surface is creamy-white with a sparse, white primary tomentum ( Moncada 2012 ). The palmate thallus is characteristic for newly-distinguished S. madidiensis ; however, the taxa differ in the size of the thallus, which is smaller in S. tomentosa (up to 5 cm) with abundant, fasciculate cilia. In addition, S. tomentosa has abundant apothecia, which are absent in S. madidiensis . Both taxa also differ in the structure of the tomentum, which in S. tomentosa , is sparse and absent towards the margin and white to greyish-white towards the centre, whereas in S. madidiensis , the primary tomentum is dense towards the margin and whitish-yellow to dark brown in the centre ( Moncada 2012 ; Moncada et al. 2021a ). Both species are not closely related (Fig. 1 ). The species may also be confused with the phylogenetically closely-related S. leucoblepharis (Nyl.) Tuck. (Fig. 1 ), but they differ in the colour of the cilia and the density of the tomentum. In S. leucoblepharis , the cilia are golden-brown and longer than in S. tomentosa , while the primary tomentum is dense and sparse towards the margins. In addition, the apothecia are laminal rather than submarginal as in S. tomentosa and smaller (up to 1.5 cm in diameter) and their discs are orange ( Moncada 2012 ; Moncada et al. 2021a ). Another phylogenetically similar taxon is S. antoniana B. Moncada & Luecking and the two cannot be separated, based on nuITS rDNA sequences ( Moncada et al. 2020 ; Moncada et al. 2021a ). However, there are important morphological differences. Sticta antoniana has an irregular to orbicular and highly-branched thallus, without cilia and with abundant lobules, the primary tomentum is thick and dense, but without secondary tomentum. In S. tomentosa , on the other hand, the thallus is palmate to suborbicular, moderately branched, with abundant cilia and without vegetative propagules, while primary tomentum is sparse and absent towards the margin and with secondary tomentum. Both species produce apothecia, but unlike S. tomentosa , in S. antoniana , they are laminal and with crenate margins ( Moncada et al. 2020 ; Moncada et al. 2021a ). Figure 8. Morphology of Sticta tomentosa (Kukwa 15138c) A upper surface B lower surface with tomentum and cyphellae C apothecia D marginal cilia. Scale bars: 1 cm ( A ); 1 mm ( B-D ). Specimens examined. Bolivia . Dept. Cochabamba ; Prov. Carrasco, Parque Nacional Carrasco , near Rio Ibrisu , close to Sajtarumi , 17°27'09"S , 65°16'29"W , elev. 2059 m , lower montane Yungas cloud forest, corticolous, 28 Nov 2014 , M. Kukwa 15138c (LPB, UGDA) .