Edit Plant: Acorus

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'''''Acorus''''' is a [[genus]] of [[monocot]] [[flowering plant]]s. This genus was once placed within the family [[Araceae]] (aroids), but more recent classifications place it in its own family '''Acoraceae''' and order '''Acorales''', of which it is the sole genus of the oldest surviving line of monocots. The exact relationship of Acorus to other monocots, however, is still debated by scientists. Some studies indicate that it is placed in a lineage (the order Alismatales), that also includes aroids (Araceae), [[Tofieldiaceae]], and several families of aquatic monocots (e.g., Alismataceae, [[Posidoniaceae]]). Common names include '''Calamus''' and '''[[Sweet Flag]]'''. It is known as ''vasambu'' in [[Tamil language]]. The name 'acorus' is derived from the Greek word 'acoron', a name used by [[Dioscorides]], which in turn was derived from 'coreon', meaning 'pupil', because it was used in [[herbalism|herbal medicine]] as a treatment for [[inflammation]] of the [[eye]]. The genus is native to [[North America]] and northern and eastern [[Asia]], and [[naturalised]] in southern Asia and [[Europe]] from ancient cultivation. The known wild populations are [[diploid]] except for some [[tetraploid]]s in eastern Asia, while the cultivated plants are sterile [[triploid]]s, probably of [[Hybrid (biology)|hybrid]] origin between the diploid and tetraploid forms. These grasslike evergreen plants are '''hemicryptophytes''', (i.e. perennial plants of which the overwintering buds are at the soil surface) or '''geophytes''' (i.e. the overwintering buds are found underground, usually attached to a bulb, corm, tuber, etc.). Their natural habitat is at the waterside or close to marshes, often found with reedbeds. The inconspicuous [[flower]]s are arranged on a lateral [[spadix]] (a thickened, fleshy axis). Unlike aroids, there is no [[spathe]] (large bract, enclosing the spadix). The spadix is 4-10 cm long and is enclosed by the foliage. The bract can be ten times longer than the spadix. The [[leaf|leaves]] are linear with entire margin. The parallel-veined leaves of some species contain ethereal oils that give a sweet scent when dried. Fine-cut leaves used to be strewn across the floor in the Middle Ages, both for the scent, and for presumed efficacy against [[pest (animal)|pest]]s. {{Inc| Acorus (ancient name of unknown meaning). Araceae. Hardy, herbaceous water-loving plants. Lvs. sword-shaped, erect: spadix appearing lateral, with no true spathc; fls. inconspicuous. They thrive best in moist soil, and may be grown in shallow water or on dry land. Prop, easily in spring or autumn by division.{{SCH}} }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Species== In older literature and on many websites, there is still much confusion, with the name ''Acorus calamus'' equally but wrongfully applied to ''Acorus americanus''. The genus includes as many as six [[species]]: *''[[Acorus americanus]] (Raf.) Raf. '' (formerly known as ''A. calamus'' var. ''americanus'') - '''American Sweet Flag'''; fertile diploid (2''n'' = 24); occurring in Alaska, Canada and northern USA. Diploid plants in [[Siberia]] and temperate Asia may also belong here, but have not been fully investigated (<ref>http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=222000002</ref>). Recently recognised as a distinct species by the ''Flora of North America''. *''[[Acorus calamus]]'' L. - '''Common Sweet Flag'''; sterile triploid (3''n'' = 36); probably of cultivated origin. It is native to [[Europe]], temperate [[India]] and the [[Himalaya]]s and southern Asia, widely cultivated and naturalised elsewhere. *''[[Acorus gramineus]]'' Sol. ex Aiton - '''Japanese Sweet Flag''' or '''Grassy-leaved Sweet Flag'''; fertile diploid (2''n'' = 18); occurring in the Himalayas to Japan, Myanmar, Thailand, the Philippines. *''[[Acorus triqueter]]'' Turcz. ex Schott (syn. ''A. calamus'' var. ''angustatus'') - fertile tetraploid (4''n'' = 48); occurring in eastern Asia, Japan and Taiwan. *''[[Acorus latifolius]]'' Z.Y.Zhu : native to China *''[[Acorus xiangyeus]]'' Z.Y.Zhu : native to China ==Gallery== <gallery perrow=5> Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== <references/>    ==External links== *{{wplink}} {{stub}} __NOTOC__

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