Quinoa flowers lack วงกลีบดอก and both เพศเมีย and perfect flowers are known to occur. The perfect flower has five sepals, five anthers and a superior ovary from which two or three stigmatic branches emerge (Hunziker, 1943), but Bertero et al. (1996) observed four stigmatic branches in the gynoecial primordium. However, at anthesis only three stigmatic branches are present and one is aborted (Bertero et al., 1996). Bhargava et al. (2007b) undertook a detailed study on the structure and the arrangement of various types of flowers on the inflorescence in quinoa. The flowers could be divided into five types, based on their being hermaphrodite or female, presence or absence of perianth and size.