Trichogyne is a genus of flowering plants in the daisy family, Asteraceae.

In the fungal phylum of Ascomycota, trichogyne is what is formed by the fusion of the "male" and "female" hyphal strands.

A very fine hypha, called trichogyne emerges from one gametangium, the ascogonium, and merges with a gametangium (the antheridium) of the other fungal isolate.

In the Carposporophyte: a spermatium merges with a trichogyne (a long hair on the female sexual organ), which then divides to form carposporangia - which produce carpospores.

The trichogyne will continue to grow until it encounters a spermatium; once it has been fertilized, the cell wall at its base progressively thickens, separating it from the rest of the carpogonium at its base.