Cystocarp
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A cystocarp {{cite web|title=meaning of cystocarp|url=http://dictionary.reverso.net/english-definition/cystocarp}} is the fruiting structure produced in the red algae after fertilization, especially such a structure having a special protective envelope (as in
Polysiphonia). The structure from which carpospores are released.Maggs, C.A. and Hommersand, M.H. 1993. Seaweeds of the British Isles Volume 1 Rhodophyta Part 3A Ceramiales. The Natural History Museum, London {{ISBN|0-11-310045-0}}