1.   A lot of research into medicinal plants and traditional remedies has now been carried out.

2.   Examines the problems of conserving medicinal plants, suggests an appropriate national conservation programme and gives advice on international collaboration.

3.   Substantial sums have been spent in the deliberate search for medicinal plants, and they have seldom been rewarded.

4.   They had considerable physiological and anatomical knowledge, detailed knowledge of thousands of medicinal plants, and wide-ranging curative and preventative skills.

5.   They might have represented medicinal plants for pregnancy.

6.   ...medicinal plants.

7.   They planted food and medicinal plants, migrated seasonally and moved their villages.

8.   The survival of many wild medicinal plants is threatened by the booming trade in herbal remedies and herbal teas, according to a study by TRAFFIC International.