Page 143 - Pharmacognosy 2 PG303 (1)
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Pharmacognosy-2 (PG303)                              Level 2                  Clinical Pharmacy-Pharm D



                                                                          Medicinal Herbs


                  Herb                 Lobelia                  Mentha                    Thymus                   Hyoscyamus                    Cannabis
                                    (Indian tobacco)          (peppermint)                                   (Egyptian henbane)            (Indian hemp, Hashish)
                  Origin         (Asthma weed, American   Dried leaves and       Dried leaves and flowering tops  Dried leaves and flowering   Dried flowering and fruiting
                                        Lobelia)         flowering tops of Mentha   of Thymus vulgaris Linne.   tops of Hyoscyamus muticus   tops of pistillate plants of
                               Dried aerial parts of Lobelia   piperata family Labiatae   family: Labiatae (Lamiaceae)   L. Family: Solanaceae.    Cannabis sativa Linne. Family:
                               inflata L. family         (Lamiaceae).                                                                   Cannabinaceae.
                               Companulaceae, Collected
                               towards the end of the
                               flowering stage.
                  Macroscopical   Angular, winged (2-5) and   Quadrangular       Quadrangular.               Cylindrical, hollow        Cylindrical, numerous bracts.
                    character   very hairy.
                  1.Stem













                  Oder                                   Aromatic with cold      Agreable aromatic           Narcotic odor              Narcotic odor
                  Taste                                  sensation               Pungent aromatic            Better saline taste        with very slight taste
                  2.Leaves     Irregular, Crenate- dentate   Opposite decussate,   Opposite decussate, Entire   Rhomboidal Entire margin.   Types of Bracts:
                               margin                    serrated margin.        margin.                                                1.  Simple and sessile: entire
                                With scattered stiff hairs                                                                                  margin.
                               especially along the margin.                                                                             2.  Palmately compound: entire
                                                                                                                                            margin.











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