Isolation and structure determination of the two new ester alkaloids of Heliotropium bracteatum, viz. helibracteatinine and helibracteatine, are described. Helibracteatinine was formulated as 1 beta-hydroxymethyl-7 alpha-angelyloxy-8 alpha-pyrrolizidine- 1 alpha-ol and helibracteatine as 1 beta-angelyloxy-8 alpha-pyrrolizidine-1 alpha, 7 alpha-diol. Structures were established by spectrometry of the alkaloids and by hydrolysis to their necine bases.