Trimonoecy

Trimonoecy, also called polygamomonoecy, is when male, female, and hermaphrodite flowers are on the same plant. Trimonoecy is rare.

It is a monomorphic sexual system along with monoecy, gynomonoecy, and andromonoecy. It is hypothesized that trimonoecy originated from gynomonoecy.

Occurrence
Trimonoecy occurs in plant families like Anacardiaceae, Apiaceae, Araliaceae, Chenopodiaceae, Fabaceae, Orchidaceae, Palmae, and more. It is rare in the family Commelinaceae.

Trimonoecious species include:


 * Cocos nucifera
 * Sanguisorba minor
 * Thymelaea hirsuta
 * There is evidence Phyllanthus acidus is trimonoecious.