Two pyrrolizidine alkaloids helibractinecine and retronecine have been isolated from Heliotropium bracteatum and their structures were elucidated by physicochemical methods. Helibractinecine, a new pyrrolizidine free necine was formulated as 1 alpha-hydroxymethyl-8 alpha-pynrolizidine-1 beta,7 beta-diol.