Eleocharis is a virtually cosmopolitan genus of 250 or more species of flowering plants in the sedge family, Cyperaceae. The name is derived from the Greek words ἕλειος (
heleios), meaning "marsh dweller," and χάρις (
charis), meaning "grace." Members of the genus are known commonly as
spikerushes or
spikesedges. The genus has a geographically cosmopolitan distribution, with centers of diversity in the Amazon Rainforest and adjacent eastern slopes of the So
(Wikipedia)