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PHARMACOGNOSTICAL EVALUATION OF PAJANELIA LONGIFOLIA (WILLD) K. SCHUM BARK

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Author(s): Padyana Subrahmanya | Rao Radhakrishna | M. Ashalatha | Jha Prashanth Kumar

Journal: International Journal of Research in Ayurveda and Pharmacy
ISSN 2229-3566

Volume: 1;
Issue: 2;
Start page: 255;
Date: 2010;
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Keywords: Pajanelia longifolia (Willd.)K.Schum | Bark | Ethnomedicine | Kalanjimale Range | Pharmacognostical study.

ABSTRACT
Pajanelia longifolia (Willd.)K.Schum. belongs to the family Bignoniaceae which is a successful Ethnomedicinal plant in skin disease, particularly in Eczema, commonly used by the folklore practitioners of the Kalanjimale Range in Dakshina Kannada District of Karnataka state. Hence to explore its identity, the pharmacognostical study of the Bark of the plant Pajanelia longifolia (Willd.) K. Schum is undertaken.The bark is very thick with rhytidoma which is peeled off. The cells of cork contain dark colouring matter. The secondary phloem is with patches of lignified cells in rows, interrupted by uniseriate ray cells and other phloem elements. Prismatic crystals of calcium oxalate of various shapes and sizes are present in cork region and parenchyma cells. Powder microscopy shows the presence of fragments of fibres, cork cells and crystals of calcium oxalate.
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