The Collaborative International Dictionary
Polygamia
Polygamia \Pol`y*ga"mi*a\, n. pl. [NL. See Polygamous.] (Bot.)
A Linn[ae]an class of plants, characterized by having both hermaphrodite and unisexual flowers on the same plant.
A name given by Linn[ae]us to file orders of plants having syngenesious flowers.
Wiktionary
polygamia
n. 1 (context botany English) A ''Linnæan'' class of plants, characterized by having both hermaphrodite and unisexual flowers on the same plant. 2 (context botany English) A name given by Linnæus to file orders of plants having syngenesious flowers.