The Cyperaceae are a family of graminoid, monocotyledonous flowering plants known as sedges. The family contains around 5,500 described species in about 90 genera – the largest being the "true sedges"
Scirpoides
…Scirpoides is a genus of sedges (Cyperaceae), native to Europe and adjoining areas, and introduced elsewhere. It was split off from Scirpus. Four species are accepted…
Pycreus
Artificial floating island communities made of totora by the Uru peoples in Lake Titicaca