List of Plants Reported to Contain Rotenone or Rotenoids June 1942 (Classic Reprint)

Excerpt from List of Plants Reported to Contain Rotenone or Rotenoids: June 1942 From the standpoint of actual use as insecticides, the most important Species are Derris elliptic Q. Malaccensis, Lonchocarpus urucu, and L utilis. The roots of these plants are at present the chief commercial source of rotenone-containing insecticides. Derris roots are cultivated on a large scale in Malaya and the Dutch East Indies. Lonchocarpus roots are obtained from Brazil and Peru. The material from Brazil is largely M. Urucp, gener ally called timbo; that from Peru is mostly L. Utilis, generally called cube. The latter was formerly classified as L. Nicou, but this name has been retained for a species found in the Guianas. For a full discussion of the common names used in referring to Lonchocarpus species reference is made to Roark Roots of Derris elliptic_a_. And the two species of Lonchocarpus are generally high in rotenone, while those of Q. Malaccensis, though of only moderate rotenone content, usually have a high content of other toxic principles. Ihi general the content of active principles in other plants is lower than in these commercially used species. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.