bearing separate male and female flowers or florets in an inflorescence or flower head, e.g. some Asteraceae in which the ray florets may be neuter or unisexual and the disk florets may be bisexual. cf. homogamous
• (a.) Characterized by heterogamy. • (a.) The condition of having two or more kinds of flowers which differ in regard to stamens and pistils, as in the aster.
<plant biology> Producing flowers of two or more kinds with respect to their fertile organs, for example male and female or bisexual and female. ... Compare: homogamous. ... (09 Oct 1997) ... 
Het`er·og'a·mous adjective [ Hetero- + Greek 
With two or more kinds or forms of flowers.
Type: Term Pronunciation: het′ĕr-og′ă-mŭs Definitions: 1. Relating to heterogamy.
heterogamy, heterogamous, heterogamic, heterogamosis 1. Marriage between persons distinctly unsuitable for each other or who are grossly incomptible. 2. In botany, mediate or indirect fertilization of plants.heterogamous, heterogamy The succession of differently organized generations of animals or plants where sexual generation alternates with parthenogenesis.