“Medicinal Plants of Tropical and Subtropical Regions” by Arthur Frederick Sievers and E.C. Higbee, published in 1942 by the U.S. Department of Agriculture, serves as a comprehensive guide to the botanical species native to or adapted to tropical and subtropical climates. The primary focus of the work is on the medicinal applications of these plants, though it also touches upon their industrial uses. The authors aim to provide a practical reference for those interested in cultivating these plants in regions where they are not indigenous, offering insights into their growth conditions, cultivation methods, and economic potential.​

The publication acknowledges the incomplete or contradictory information available about many of these plants, particularly concerning their cultivation and the gathering of their medicinal products. Recognizing this gap, Sievers and Higbee endeavor to present a concise summary that can assist individuals in determining whether a particular species might be suitably adapted for introduction and cultivation in new areas. While not exhaustive, the pamphlet serves as a starting point for further investigation into the commercial viability of these plants outside their native habitats.​

This work stands as a valuable resource for those seeking to understand the potential of tropical and subtropical medicinal plants. It bridges the gap between traditional knowledge and modern agricultural practices, highlighting the importance of these plants not only in traditional medicine but also in the broader context of economic botany. By offering practical information on cultivation and usage, it paves the way for the sustainable integration of these plants into new regions, thereby expanding their benefits to a global audience.