"Oogonia" is a word in ENGLISH

A special cell in certain cryptogamous plants containing oospheres, as in the rockweeds (Fucus), and the orders Vaucherieae and Peronosporeae.

of Oogonium

An unfertilized, rounded mass of protoplasm, produced in an oogonium.

An oogonium; also, a case containing oval or rounded spores of some other kind than oospores.