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Pharmacognostical Study of Leaves of Sonchus arvensis Linn.

Dr. Prashant Kumar Jha, Reader, Research Methodology, ALNRMAMC, Koppa
Prof. (Dr.) Sanjaya K.S., Department of Dravyaguna,
Anushree H.S., Research Assistant, ALNRMAMC, Koppa

Present study is to establish the pharmacognostical characters of leaves of S. arvensis, a plant used for swellings in Indian folklore medicine. The leaves were lyrately-pinnatifid with toothed margin and auriculate base, almost half-covering to stem. The veins were mixed craspedodromous type. The macroscopic characters revealed the astringent, bitter taste while anomoncytic stomata was seen in surface preparation. Open bicollateral vascular bundles with presence of outer and inner phloem were noted. Solubilities of powder of leaves was higher in both alcohol and water. Total 8 spots of varying Rf values were observed in thin layer chromatography under long UV.
Keywords: Sonchus arvensis, pharmacognosy, lyrate, pinnatifid, craspedodrmous, anomocytic stomata…………

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