Three new combinations and one lectotypification of fern and lycophyte taxa from the French overseas territories Author Rouhan, Germinal Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, Sorbonne Université, École Pratique des Hautes Études, CNRS, Université des Antilles; CP 39, 57 rue Cuvier, 75005 Paris, France Author Boullet, Vincent 0000-0002-3482-1662 Conservatoire Botanique National de Mascarin, 2 rue du Père Georges, Les Colimaçons, 97436 Saint-Leu, La Réunion; France v. boullet 43 @ orange. fr; https: // orcid. org / 0000 - 0002 - 3482 - 1662 & EA 7462 Géoarchitecture, Université de Bretagne Occidentale, 29200 Brest v.boullet43@orange.fr Author Field, Ashley Queensland Herbarium, Department of Environment and Science, Brisbane Botanic Gardens, Mount Coot-tha, Mt Coot-tha Road Toowong, Qld 4066, Australia & Australian Tropical Herbarium, Sir Robert Norman Building, James Cook University Campus, Smithfield Queensland 4878, P. O. Box 6811 Cairns, Qld 4870, Australia. Author Schuettpelz, Eric Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, U. S. A. text Phytotaxa 2021 2021-04-16 497 1 54 56 http://dx.doi.org/10.11646/phytotaxa.497.1.6 journal article 10.11646/phytotaxa.497.1.6 1179-3163 5423814 Antrophyopsis gigantea (Bory) Rouhan, Boullet & Schuettp. , comb. nov. Basionym: Antrophyum giganteum Bory (1833: 36) Type:— Mauritius . Le Pouce , C . Bélanger s.n. ( lectotype P [ P00483382 !], hic designatus; isolectotypes P [ P00483381 !], P [ P01482666 !]) . Notes:—This species was not included in the study of vittarioid ferns by Schuettpelz et al. (2016) and its placement in the phylogeny has yet to be assessed. Nonetheless, it is morphologically most similar to Antrophyopsis boryana ( Willdenow 1810: 128 ) Schuettpelz (2016: 717) that was included in the molecular analysis and confirmed as belonging to Antrophyopsis ( Benedict 1907: 447 ) Schuettpelz (2016: 717) . It is distinguished from A. boryana by sessile, subelliptic to suboblanceolate fronds, but both share the generic characters, notably spherical apical cells of the soral paraphyses and ecostate laminae (i.e. lacking midribs). Although A. gigantea was described from Mauritius , it was never observed there again ( Badré 2008 ) and is today known only from La Reunion . As there are three sheets housed at P , we designated as lectotype the sheet with complete leaves given that the base of fronds is critical for distinguishing the species; also, the same sheet bears the more complete labels.