גומא (cyperus)

Cyperus is a large genus of about 700 species of sedges, distributed throughout all continents in both tropical and temperate regions.

They are annual or perennial plants, mostly aquatic and growing in still or slow-moving water up to 0.5 m deep. The species vary greatly in size, with small species only 5 cm tall, while others can reach 5 m in height. Common names include papyrus sedges, flatsedges, nutsedges, umbrella-sedges and galingales. The stems are circular in cross-section in some, triangular ...