21.   Later they would cultivate hearts of palm, black pepper, fish or medicinal plants for the export market.

22.   Little guidance in choosing medicinal plants is available to U.S. consumers.

23.   Natural Health magazine describes the work of United Plant Savers, which tries to protect medicinal plants at risk of extinction.

24.   Not only do patients need protecting, Samba said, but some native medicinal plants with potentially lucrative new applications might, too.

25.   Other new products include allspice and various medicinal plants.

26.   Pfizer, Merck and other major pharmaceutical companies support its investigations of medicinal plants.

27.   Seen from the south, the Amazon seems a cornucopia of easily extracted oil, minerals, timber, medicinal plants and other riches.

28.   So research stopped, and medicinal plants were dropped from use.

29.   Study the medicinal plants, wild blueberry and mountain laurel of a Leni-Lenape tribal village, and find out how these local Native Americans grew their vegetables.

30.   That was before eco-tours took well-heeled conservationists down the Amazon River to see medicinal plants in a shrinking rain forest.