Pharmacognostical studies on the leaves of Plectranthus amboinicus (Lour) Spreng

Nirmala Devi Kaliappan, Periyanayagam Kasi Viswanathan


Plectranthus amboinicus (Lour) Spreng belonging to the family Lamiaceae commonly known as Karpuravalli, Omavalli in Tamil, Patta ajavayin, Patharcur in Hindi, Country borage in English is a large succulent aromatic perennial herb. It is highly aromatic pubescent herb with distinctive smelling leaves. Th e plant is distributed throughout in India, cultivated in the gardens. Th e leaves of this plant have been used in malarial fever, hepatopathy, renal and vesical calculi, cough, chronic asthma, hiccough, bronchitis, anthelmintic, colic and convulsions. Th is paper deals with the micro morphological studies carried out on the leaves of Plectranthus amboinicus one of the WHO accepted parameter for identifi cation of medicinal plants. For the better understanding of structural details ScanningElectron Microscopy (SEM) also employed.
Key words: Coleus amboinicus, Coleus aromaticus, micro morphology, Plectranthus amboinicus, scanning electron microscopy

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