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2. Extensive collecting of other Euphorbiaceae, especially members
of subfamily Crotonoideae Pax, for systematic studies.
3. The obtaining of propagules of Cnidoscolus for dispersal to
botanical gardens or to other cultural institutions and specialists
concerned with possible economic uses.
4. The training with field experience in tropical and subtropical
vegetation for graduate students.

TRAVEL

South American field work will involve two trips, one of a two-month
and one of a four-month duration by the principal investigator and a
graduate student research assistant. The areas to be visited will be
primarily type localities with secondary sites based on other herbarium
records. Major herbaria of the countries involved will be visited,
especially those in Rio de Janeiro, São Paulo, and Bogota.
The fact that most of the species of Cnidoscolus are dormant during
the dry season - from ca. April through September - necessitates field
work during the Northern Hemisphere school year.
The first trip is planned for December 1977 to January 1978 and will
result in missing two weeks of instruction which other faculty have
agreed to cover. This trip will concentrate on: a) the State of Bahia
in northeast Brazil and adjoining semi-arid and arid regions, and b) on
the arid coastal areas of Columbia (see maps and summary of localities
at the end of Appendix I).