Monoicy

Monoicy (/mɒˈnoʊəsi/) is a sexual system in haploid plants (mainly bryophytes) where both sperm and eggs are produced on the same gametophyte, in contrast with dioicy, where each gametophyte produces only sperm or eggs but never both. Both monoicous (/mɒˈnoʊəkəs/) and dioicous gametophytes produce gametes in gametangia by mitosis rather than meiosis, so that sperm and eggs are genetically identical with their parent gametophyte.

Not to be confused with Monoecy.

It has been suggested that monoicy may have benefits in dry habitats where the ability to produce sporophytes is limited due to lack of water.: 292 

Monoicy is similar to, and often conflated with, monoecy, which applies to seed plants (spermatophytes) and refers to separate male and female cones or flowers on the same plant.

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