Central and South America
Anacardium occidentale
Croton ciliato-glandulosus
Cyanophyta (in water)
Dieffenbachia spp.
Excoecaria agallocha
Hippomane mancinella
Hura crepitans
Jatropha urens
Metopium toxiferum
Mucuna spp.
Opuntia spp.
Urera baccifera
Urtica spp.