Prodromus of a fern flora of Bolivia. XLII. Update I. Author Kessler, Michael Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland. Author Smith, Alan R. University Herbarium, 1001 Valley Life Sciences Bldg. # 2465, University of California, Berkeley, CA 94720 - 2465. Author Øllgaard, Benjamin Department of Biology - Ecoinformatics and Biodiversity, Ny Munkegade 116, building 1137, 8000 Aarhus C, Denmark. Author Matos, Fernando B. Centro de Referência em Informação Ambiental (CRIA), Rua João Carlos do Amaral 500, 13070 - 111, Campinas, SP, Brasil. Author Moran, Robbin C. New York Botanical Garden, 2900 Southern Blvd., Bronx, New York, 10458 - 5126, USA. text Phytotaxa 2023 2023-12-20 630 3 183 210 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.630.3.2/51376 journal article 10.11646/phytotaxa.630.3.2 1179-3163 10409920 Elaphoglossum by F.B.Matos and R.C.Moran Kessler et al . (2018) treated 127 species of Elaphoglossum for Bolivia , including 11 species in sect. Polytrichia . Since then, taxonomic work by Matos et al . (2019 , 2022 ) has led to a re-circumscription of the section and of species limits. Molecular phylogenetic studies have shown that the Decursivum Group of Elaphoglossum is nested within sect. Polytrichia , even though its species lack the characteristic subulate scales that define the section. In Bolivia , the species belonging to the Decursivum Group are Elaphoglossum miersii and E. papyraceum , which were previously placed in section Lepidoglossa and Elaphoglossum , respectively (Kessler et al . 2018). More importantly, the specimens placed under E. ambiguum by Smith et al . (1999) and Kessler et al . (2018) were found not to be this species (which belongs to sect. Polytrichia and occurs from Hispaniola to Colombia ); instead, they represent an undescribed species in sect. Elaphoglossum , which we here describe. Also, we here report the first Bolivian record of Elaphoglossum alipes and synonymize E. pilosius under E. lindenii .