Monofluoroacetate occurs in young leaves and seeds of Dichapetalum bra
unii Engl. & K. Krause from southeast Tanzania at concentrations of 72
00 and 8000 ppm, respectively, on a dry weight basis. This is the high
est level so far reported from a plant source. The fluoride and monofl
uoroacetate (MFA) concentrations in this species are compared with tho
se of six other Dichapetalum spp. collected from the same locality in
Tanzania, The seeds of D. braunii, unlike D. toxicarium, do not contai
n any omega-fluorinated fatty acids.