Cyperus odoratus is a species of
sedge known by the common names
fragrant flatsedge and
rusty flatsedge. This plant can be found in much of the tropical and warm temperate world, including
South,
Central, and
North America,
Southeast Asia, some
Pacific Islands,
Australia,
New Guinea,
Madagascar, and central
Africa.
[1][2][3] It is a plant of wet, muddy areas, including disturbed and altered sites. This species is quite variable and may in fact be more than one species included under one name. In general this is an annual plant approaching half a meter in height on average but known to grow much taller. It usually has some long, thin leaves around the base. The
inflorescence is made up of one to several cylindrical spikes attached at a common point. Each of the spikes bears a large number of flat, oval-shaped
spikelets. Each spikelet is usually light brown to reddish-brown and has a few to over 20 flowers. Each flower is covered by a tough, flat
bract with a visible midvein. The fruit is a flat
achene less than two millimeters long.
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