DE PLANTIS TOXICARIIS E MUNDO 
NOVO TROPICALE COMMENTATIONES IV 
BY 
RicHarp Evans SCHULTES 
IN CONTINUATION of a series of articles on toxic plants 
of the New World tropics, this contribution will call 
attention to a number of species with miscellaneous in- 
teresting ethnobotanical notes as to their use but which, 
for the most part, have not been subjected to phyto- 
chemical examination. 
Most of the data reported in the following pages were 
gathered during field work which I have carried out in 
the American tropics or which my students have reported 
as a result of their ethnobotanical studies in sundry parts 
of Latin America. 
It will be clear to phytochemists that the analysis of 
some of the species enumerated may be of special inter- 
est, since a number of the plants belong to genera or 
even families from which biodynamic constituents have 
not hitherto been isolated. 
The current phases of this research on toxic plants of 
the New World tropics, including the preparation and 
publication of most of the plates in this contribution, 
are supported by a grant from the National Institutes of 
Health (No. LM-GB 00071-01). The line drawings have 
been prepared by the late Mr. John Stanwell-Fletcher 
and by Mr. Gordon W. Dillon, Mr. Joshua B. Clark and 
Miss Irene Brady. 
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