A sexual zooid produced as a medusoid bud upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached. See Hydroidea, and Illusts. of Athecata, Campanularian, and Gonosome.

the medusae of some hydroids (Class Hydrozoa) which are reduced to gonadal tissue and do not detach.

a sexual zooid produced as a medusa bud upon a hydroid, sometimes becoming a free hydromedusa and sometimes remaining attached

A lengthened receptacle, bearing the stamens and carpels in a conspicuous manner.