Carpogonium

noun

1. The flask-shaped female gamete of a red alga, having a trichogyne at one end.
2. In botany, the female organ in the Carposporeæ; the cell, or system of cells, which after fertilization produces the sexual spores, in whatever manner; in Florideæ, the carpogenic cell or system; the procarp. The term is most properly used of Florideæ, which are the typical Carposporeæ.