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  Acorus calamus L.
  Family Name : Acoraceae

  Common Names : Calamus, Sweet Flag

  Chinese Name : 白菖蒲, 水菖蒲

Calamus,Sweet Flag
  • Record Info
  • Life Stage & Characteristics
    • Plant Division :
      Angiosperms (Flowering Seed Plants) (Monocotyledon)
      Plant Growth Form :
      Aquatic & Hydrophyte (Emergent; Waterside / Marginal)
      Lifespan (in Singapore) :
      Mode of Nutrition :
      Plant Shape :
      Maximum Height :
      1 m
      Maximum Plant Spread / Crown Width :
      1 m
  • Biogeography
    • Native Distribution :
      India, Central Asia, Eastern Europe
      Native Habitat :
      Aquatic (Freshwater Pond / Lake / River)
      Preferred Climate Zone :
      Tropical, Sub-Tropical / Monsoonal
  • Description & Ethnobotany
    • Plant Morphology :
      Growth Form: Perennial herb with an erect growth habit. It can grow up to 150cm tall and has a creeping growth form. 
      Foliage: Linear, aromatic leaves have entire leaf margin and narrow to a fine tip. They are arranged in a fan-like shape and have a red base.
      Stems: It has a branching, underground rhizome.
      Flowers: The flowers are bisexual and consist of 6 tepals, 6 stamens and a sessile stigma. 
      Fruits: The fruit is in the form of a berry. 
      Cultivation :
      It is best grown under full sun, in consistently wet soil. 
      Ethnobotanical Uses :
      Medicinal (In Indian folk medicine, this plant is used in combination with other ingredients to treat inflammatory pain, headaches and migraines. The anti-inflammatory activity of compounds in this species was demonstrated in a rat-based model by Muthuraman and Singh (2011).)
  • Landscaping Features
    • Desirable Plant Features :
      Ornamental Foliage
      Plant & Rootzone Preference/Tolerance :
      Waterlogged Soils (Does not Drain Site), Heavy Clay Soils
      Landscape Uses :
      Coastal, Riverine, Pond / Lake / River
      Thematic Landscaping :
      Water Garden
      Usage Hazards / Cons :
      Toxic Upon Ingestion, [Remarks] (Asian populations of this species may have a toxic compound in the roots known as asarone. North American and Siberian populations may lack this compound.)
  • Plant Care & Propagation
    • Light Preference :
      Full Sun
      Water Preference :
      Lots of Water
      Propagation Method :
      Storage Organ (Rhizome)
  • Foliar
    • Mature Foliage Colour(s) :
  • References
    • Murthuraman and Singh. 2011. Attenuating effect of Acorus calamus extract in chronic constriction injury induced neuropathic pain in rats: an evidence of anti-oxidative, anti-inflammatory, neuroprotective and calcium inhibitory effects. BMC Complementary and Alternative Medicine. 11. 24
The information given on this website has been compiled from reference works on medicinal plants and/or pron only. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Reliance on this information is strictly at your own risk. You should always consult your physician before using or consuming a plant for medicinal purposes.

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