Аннотация:An aquarium plant that has been sold in the aquarium trade for about 10 years was identified as Rhynchospora albescens (Cyperaceae) and molecularly analysed. For the first time the DNA sequence of this species as well as SEM images of young flowers are shown in this article. While three stamens are normal for the species of the genus Rhynchospora section Dichromena, two stamens were found in most flowers of R. albescens examined here. This is followed by a description and experiences with aquarium culture and a summary of the previous knowledge about the ecology of the species.