A cystocarp[1] is the fruiting structure produced in the red algae after fertilization, especially such a structure having a special protective envelope (as inPolysiphonia). The structure from which carpospores are released.[2]
References
^"meaning of cystocarp".
^Maggs, C.A. and Hommersand, M.H. 1993. Seaweeds of the British Isles Volume 1 Rhodophyta Part 3A Ceramiales. The Natural History Museum, London ISBNÂ 0-11-310045-0