Contribution to the bryophyte flora of New Caledonia IV. Species new to the country, new localities together with taxonomic notes Author Thouvenot, Louis Saint Léon, 66000 Perpignan (France) thouvenot. louis @ orange. fr louis@orange.fr Author Müller, Frank Technische Universität Dresden, Institut für Botanik, 01062 Dresden (Germany) text Cryptogamie, Bryologie 2021 2021-09-17 20 13 181 196 http://dx.doi.org/10.5252/cryptogamie-bryologie2021v42a13 journal article 10.5252/cryptogamie-bryologie2021v42a13 1776-0992 7822275 Lejeunea leratii (Steph.) Mizut. SPECIMEN EXAMINED. — New Caledonia , North Province , Poindimié, Amoa valley, Tipwadabwé, 20°59’14”S , 165°13’45”E , on volcano-sedimentary rocks aside a flooded creek, along the GR trail, 211 m , 13.X.2019 , Thouvenot NC2741 PC[(PC0712104)]. COMMENTS Lejeunea leratii occurs in Indomalesia (Java, Papua-New Guinea , Malaysia [ North Borneo Island ], GBIF.org 2020 and Chuah-Petiot 2011) and in New Caledonia from where it was only known by the types of Hygrolejeunea leratii Steph. and H. gottscheana Steph. ( Thouvenot et al. 2011 ). The former has been collected near Poindimié in North Province , the latter lack indications for collector and locality. The main characters of these plants ( Fig. 1 I-L) are: 1) the very large reniform underleaves, 300-400 µm long, 600-800 µm wide, as wide or wider than the corresponding leaves, the margins entire to retuse at apices; 2) the leaves oval, entire, with a small and inflated lobule, 1∕6× the lobe width, with a single one-celled tooth, and 3) the leaf cells relatively large, 25 × 37 µm, with large trigones and intermediate thickenings. The discovery of the new specimen in the municipality where the type had been collected confirms its presence in North Province .