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Fragrant flatsedge
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Cyperaceae
Genus:	Cyperus
Species:	C. odoratus
Binomial name
	Cyperus odoratus; L.
Synonyms
	List Diclidium odoratum (L.) Schrad. ex Nees; Papyrus odorata (L.) Willd.; Papyrus odorata (L.) Kunth; Torulinium odoratum (L.) S.S.Hooper; Cyperus bracteolatus Steud.; Cyperus californicus S.Watson; Cyperus carruthii Alph.Wood; Cyperus consocius Steud. ex Jard.; Cyperus cubanus Liebm.; Cyperus densiflorus G.Mey.; Cyperus distans G.Mey.; Cyperus eggersii Boeckeler; Cyperus eggersii var. laticeps Kük.; Cyperus engelmannii Steud.; Cyperus erythrorhizus Torr.; Cyperus familiaris Steud.; Cyperus ferax var. bulbifer Barros; Cyperus ferax var. densiflorus (G.Mey.) Kük.; Cyperus ferax var. engelmannii (Steud.) Kük. ex Osten; Cyperus ferax subsp. engelmannii (Steud.) Kük.; Cyperus ferax var. maximiliani (Schrad. ex Nees) Boeckeler; Cyperus ferax var. novae-hannoverae (Boeckeler) Kük.; Cyperus ferax f. parvus (Boeckeler) Kük.; Cyperus ferax subsp. speciosus (Vahl) Kük.; Cyperus ferax var. squarrosus (Britton) Kük.; Cyperus ferox Vahl; Cyperus ferruginescens Boeckeler; Cyperus flavicomus Pursh; Cyperus flexuosus Griseb.; Cyperus fossarum Liebm.; Cyperus fossarum Schltdl.; Cyperus fragilis Liebm.; Cyperus granadinus Liebm.; Cyperus haenkei J.Presl & C.Presl; Cyperus hamiltonii Kunth; Cyperus horizontalis Steud.; Cyperus huarmensis (Kunth) M.C.Johnst.; Cyperus jubaeiflorus Rudge; Cyperus laetus var. obtusiflorus Boeckeler; Cyperus lenticularis Steud.; Cyperus lomentaceus Nees & Meyen ex Kunth; Cyperus longispicatus Norton; Cyperus lucidus Kunth; Cyperus macrocephalus var. eggersii (Boeckeler) S.D.Jones, Wipff & R.Carter; Cyperus maximiliani (Schrad. ex Nees) Griseb.; Cyperus michauxianus Schult.; Cyperus multibracteatus Boeckeler; Cyperus multiceps Hook. & Arn.; Cyperus nitidulus Boeckeler; Cyperus nortonii A.Heller; Cyperus novae-hannoverae Boeckeler; Cyperus odoratus var. attenuatus Fosberg & Sachet; Cyperus odoratus var. curtispiculus Fosberg & Sachet; Cyperus odoratus var. engelmannii (Steud.) R.Carter, S.D.Jones & Wipff; Cyperus odoratus var. novae-hannoverae (Boeckeler) Fosberg & Sachet; Cyperus odoratus var. squarrosus (Britton) S.D.Jones, Wipff & R.Carter; Cyperus oerstedii Liebm.; Cyperus parvispiculatus Boeckeler; Cyperus parvus Boeckeler; Cyperus pennatus Boeckeler; Cyperus phleoides Seem.; Cyperus poeoides Desv.; Cyperus pohlianus (Nees) Kuntze; Cyperus prescottianus Hook. & Arn.; Cyperus pseudostrigosus Steud.; Cyperus raiateensis J.W.Moore; Cyperus raphiostachys Link; Cyperus reineckei Boeckeler; Cyperus rufinus Liebm.; Cyperus sanctae-crucis Liebm.; Cyperus speciosus Torr.; Cyperus speciosus Vahl; Cyperus speciosus var. ferruginescens (Boeckeler) Britton; Cyperus speciosus var. parvus Britton; Cyperus speciosus var. squarrosus Britton; Cyperus stellatus Rudge; Cyperus tenuior Engelm.; Cyperus vahlii Boeckeler; Cyperus virginicus Jacq. ex Steud.; Diclidium auriculatum Nees; Diclidium lenticulare Schrad. ex Nees; Diclidium lomentaceum Nees; Diclidium maximiliani Schrad. ex Nees; Diclidium reinwardtii Schrad. ex Nees; Diclidium uliginosum Schrad. ex Nees; Mariscus familiaris (Steud.) T.Koyama; Mariscus huarmensis Kunth; Mariscus pohlianus Nees; Mariscus rhaphiostachys Liebm.; Torulinium confertum Desv.; Torulinium eggersii (Boeckeler) C.B.Clarke; Torulinium macrocephalum var. davidsei C.D.Adams; Torulinium macrocephalum var. eggersii (Boeckeler) C.D.Adams; Torulinium michauxianum C.B.Clarke;

Cyperus odoratus is a species of sedge known by the common names fragrant flatsedge and rusty flatsedge. This species is quite variable and may in fact be more than one species included under one name.

Description

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.^[2]

Distribution and habitat

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]^[3]^[4] It is a plant of wet, muddy areas, including disturbed and altered sites.