From the preface:
"The worldwide recognition of traditional systems of medicine and awareness among people has prompted the demand for vegetable crude drugs in recent years. These are mostly obtained from the wild, which has ultimately resulted in many of the plant species becoming rare and endangered. Further, commercial vegetable crude drugs occur either as a whole (roots, rhizomes, barks, leaves, ﬂowers, fruits, seeds etc.) or as fragments (slightly or much broken condition) or as powder, which give room for illegal trade and malpractice that are prevalent in crude drug trade.
Recently, the Government of India has placed some of the rare and endangered plants under Negative list of Export, which bans trade or export from wild collections. The pharmacognostic data that are required to ascertain the correct identity of Negative listed plants in their crude form is very scanty. One has to refer to many articles, search for literature and spend enormous time to get pharmacognostic data on Negative listed
With these facts in mind, a project titled "Pharmacognostic studies on the selected plants of the Negative list of Export" was taken up. The main objective of this project work is to bring out a pictorial identification manual on Negative listed plants, which would serve as a source of reference, to facilitate quick and easy identification of genuine crude drug samples and also to check for any adulteration by professionals and non-professionals, with or without the use of microscopes or any other scientific tools.
It is hoped that this manual will be of immense use to forest and customs officials, crude drug dealers, traders, exporters and importers, traditional physicians, drug manufactures, researchers, students and others to confirm the correct identity and authenticity of Negative listed plants that appear in trade in their crude form.
It is further hoped that this illustrated identification manual will create awareness among the concerned on the importance of the Negative listed plants and also help in the conservation of these plants in their natural habitats."
Cites and Negative list of export
1. Aquilaria malaccensis Lam
2. Coptis teeta wall
3. Coscinium fenestratum (Gaertn.) Colebr
4. Cycas beddomei dyer
5. Dactylorhiza hatagirea (D.Don)Soo
6. Dioscorea deltoidea wall. Ex. Griseb
7. Frerea indica Dalzell
8. Gentiana kurroo Royle
9. Kaempferia galangal L
10. Nardostachys jatamansi (D. Don) DC
11. Nepenthes khasiana Hook. f
12. Panax pseudo-ginseng wall
13. Picrorhiza kurrooa Royle ex Benth
14. Podophyllum hexandrum Royle
15. Pterocarpus santalinus L.f
16. Rauvolfia serpentina (L.) Benth. ex Kurz
17. Renanthera imschootiana Rolfe
18. Saussurea costus (Falc.) Lipsch
19. Swertia chirayita (Roxb. ex Flem.) Karsten
20. Taxus wallichiana Zucc
21. Vanda coerulea Griff. ex Lindl
Summary and conclusion
Epigrammatic diagnostic features
Index to botanical names
Index to trade names