Vieira C. auteur aut IRD Camacho O. auteur aut IRD Wynne M. J. auteur aut IRD Mattio L. auteur aut IRD Anderson R. J. auteur aut IRD Bolton J. J. auteur aut IRD Sanson M. auteur aut IRD D'Hondt S. auteur aut IRD Leliaert F. auteur aut IRD Fredericq S. auteur aut IRD Payri Claude auteur aut IRD De Clerck O. auteur aut IRD text journalArticle eng text/pdf born digital access The existence of massive cryptic diversity in algae makes linking DNA-based lineages to existing taxa exceedingly difficult. A better integration of historical collections into modern taxonomic research is therefore highly desirable. Using the brown, algal genus Lobophora as a test case, we explore the feasibility of linking taxonomic names to clades in modern phylogenies. Despite Lobophora being a pantropical genus with probably more than 100 species, traditionally only a handful of species have been recognized. In this study we reevaluated the identity of 17 historical taxa thought to belong to Lobophora by attempting DNA amplification of herbarium material as well as specimens recently collected from the type localities (epitypes). In an attempt to assign them to Molecular Operational Taxonomic Units, the obtained sequences were integrated in a global Lobophora phylogeny based upon data derived from more than 650 specimens. Our results indicate that although five sequences were obtained from type specimens, exclusive reliance on information preserved in type specimens is problematic. Epitype material proved a more successful way forward, but this route often comes with a considerable degree of uncertainty, especially in tropical regions where the extent of sympatry among Lobophora lineages is often considerable. More problematic from a broader perspective is the fact that for 35% of historical taxa, either the type could not be traced or permission was not granted to extract DNA from the types. Such a low accessibility rate may reduce our reliance on type material and jeopardize future efforts to integrate historical taxa into a framework of a modern DNA-based taxonomy. specialized Aglaozonia Dictyota DNA herbarium Lobophora Pocockiella Ralfsia Stypopodium type material types Zonaria 034 020 076 65 4 689-707 2016 0040-0262 https://www.documentation.ird.fr/hor/fdi:010067789 10.12705/654.1 0040-0262 [F B010067789] https://www.documentation.ird.fr/hor/fdi:010067789 https://www.documentation.ird.fr/intranet/publi/2016/10/010067789.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-11-03 2017-08-23 fdi:010067789 fre