Imperata cylindrica L P Beauv Gramineae Lalang Alangalang Speargrass

Spear Grass Imperata Cylindrica
Imperata cylindrica
Imperata Cylindrica Tender Inflorescence
Inflorescences of Imperata cylindrica Imperata cylindrica fruits

Description: Imperata cylindrica (L.) P. Beauv. is a perennial erect grass about 0.6-1.5 m tall. Leaf blades are linear to lanceolate, long, 0.5-1 cm by 15-30 cm, narrow, with sharp margins and prominent nerves. Inflorescences are white and fluffy. Rhizome is hard, coriaceous and deep within the soil.[1]

Origin: Native to China and Africa but this widespread weed can be found throughout the world.[2]

Phytoconstituents: Arborinione, arundoin, anemonin, isoorientin, imper-anene, cylindol A and B, graminones A and B, cylindrene, isoarborinol, impecyloside and others.[3-10]

Traditional Medicinal Uses: Rotted grass from thatch boiled with wine is used to treat bug bite, haemoptysis, severe constipation and vaginismus. It is also used for drug withdrawal symptoms.[3] Besides being used to quench thirst, its flowers and rhizome are also used to treat blood in the sputum, nose bleeds, lung and kidney diseases, j aundice,[11] haemorrhage, wounds, haemoptysis, epistaxis, haematemesis, haematuria, nephritic oedema, high fever, and urinary tract infections.[3] The roots are used to treat fever, cough with phlegm,[11] asthma, cancer, dropsy, epistaxis, haematuria, jaundice, nephritis, diarrhoea, gonorrhoea[3] and dysuria.[12]

Pharmacological Activities: Antidiuretic,[12] Anti-inflammatory,[6] Neuroprotective^ and Antibacterial.[13]

Dosage: Rhizome is used for the treatment of urodynia, pollakiuria, haema-turia and fever. The recommended usual daily dose is 10 to 40 g in the form of a decoction, to be administered orally.[1]

Adverse Reactions: Allergic contact dermatitis[14] and sensitivity to grass pollen (Type I allergy).[15]

Toxicity: No information as yet.

Contraindications: No information as yet.

Drug-Herb Interactions: No information as yet.

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