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 Didymochlaena Until recently, the genus Didymochlaena was treated as monospecific, as also by us ( Kessler & Smith 2018d ). In a series of publications, Shang, Zhang, and collaborators have subdivided the genus into 22 species, six of which occur in tropical America ( Shang & Zhang 2023 , Shang et al . 2020 , 2021 , 2023). As a result of this, the name D. truncatula (Sw.) J.Sm., previously used by us for Bolivian specimens, is now restricted to plants from Java (where the type is from) and adjacent islands, and the new name for the Bolivian species is: