| Pt. 1 | | Introduction | | 1 |
| 1 | | Plants in medicine: the origins of pharmacognosy | | 3 |
| 2 | | The scope and practice of pharmacognosy | | 5 |
| 3 | | Plant nomenclature and taxonomy | | 8 |
| Pt. 2 | | The plant and animal kingdoms as sources of drugs | | 13 |
| 4 | | Biological and geographical sources of drugs | | 15 |
| 5 | | A taxonomic approach to the study of medicinal plants and animal-derived drugs | | 18 |
| 6 | | Pharmacological activities of natural products | | 45 |
| 7 | | Synergy and other interactions in phytomedicines by E. M. Williamson | | 53 |
| 8 | | Traditional plant medicines as a source of new drugs by P. J. Houghton | | 62 |
| 9 | | Discovering new lead compounds in pharmaceutical research and development by M. J. ONeill and J. A. Lewis | | 75 |
| Pt. 3 | | Principles related to the commercial production, quality and standardization of natural products | | 81 |
| 10 | | Commerce in crude drugs by R. Baker | | 83 |
| 11 | | Production of crude drugs | | 87 |
| 12 | | Plant growth regulators | | 93 |
| 13 | | Plant cell and tissue culture; biochemical conversions; clonal propagation | | 98 |
| 14 | | Phytochemical variation within a species | | 106 |
| 15 | | Deterioration of stored drugs | | 117 |
| 16 | | Quality control | | 121 |
| Pt. 4 | | Phytochemistry | | 133 |
| 17 | | General methods associated with the phytochemical investigation of herbal products | | 135 |
| 18 | | Basic metabolic pathways and the origin of secondary metabolites | | 148 |
| Pt. 5 | | Pharmacopoeial and related drugs of biological origin | | 169 |
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