• R C Gupta

      Articles written in Proceedings – Plant Sciences

    • Pharmacognostic studies on ‘Dravanti’ part-IJatropha curcas Linn.

      R C Gupta

      More Details Abstract Fulltext PDF

      ‘Dravanti’, an important Ayurvedic drug, has variously been ascribed to different botanical taxa,Jatropha curcas Linn. being one such species. A detailed pharmacognosy of the vegetative parts of the above species has been dealt with in the present paper. The study has revealed that such characters as the presence of 9 leaf traces in the basal parts of the petiole, mixed anisocytic and paracytic stomata with stomatal index 7·3 and 12 for the upper and the lower leaf surfaces respectively, funnel-shaped multiseriate phloem rays demarcating the phloem into wedge-shaped masses in both the root and the stem, diffused porous wood with diffused apotracheal parenchyma and 1–3 seriate xylem rays along with certain physicochemical constants and fluorescence tests can provide useful parameters for differentiating this species from other implicated taxa.

    • Pharmacognostic studies on “Dhava” (Anogeissus latifolia Bedd.) —I. Stem-bark and root

      R C Gupta

      More Details Abstract Fulltext PDF

      “Dhava” is unanimously ascribed toAnogeissus latifolia Bedd. which is a large deciduous tree having most of the curative properties as credited to its stem-bark, root and leaves. A detailed pharmacognosy of the stem-bark and the root of the above species has been dealt with in the present paper. The study revealed that while the stem-bark is characterised by its short-complete fracture, exclusively narrow phloem rays and small irregular concentric phloem fibre strands; the root is identified for its bark having fracture laminated, some considerably broad phloem rays in outer part of phloem, large regular concentric phloem fibre strands and the wood with diffused vessels, xylem parenchyma typically aliform to confluent with some scattered cells and xylem rays exclusively narrow. The fluorescence analysis of drug powders and their behaviour on treatment with different chemical reagents, percentage extractives and ash values, preliminary phytochemical studies includingTLC patterns of various extractives have also provided useful parameters to distinguish these plant-parts and check the adulteration.

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