![](https://sciencepress.mnhn.fr/sites/default/files/periodiques/visuels/grand/bryologie-grand-visuel-v2.jpg)
The short-lived thallose liverwort Riccia lamellosa (Ricciaceae) is first recorded for Azerbaijan, hence bridging the distribution gap between the Russian Caucasus, Iran and Iraq. Its site conditions in the semi-desert landscape of Qobustan south of Bakı are reported and illustrated. An updated list of Riccia species of the Caucasus ecoregion is provided.