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.