Z. flava is located in shaded areas, on rocks, pools and caves to depths of 40m (1).
The gametophytes and sporophytes are morphologically similar (1); unilocs, known as sori, occur irregularly across the thallus, and each produce eight non-flagellate spores (2).
Z. flava can be found within the Mediterranean, and north-east and north-west Atlantic (1).
Z. flava uses photosynthesis, as well as requiring various inorganic nutrients, such as carbon dioxide, phosphorus and fixed nitrogen (2).
Not listed under the IUCN Redlist (4).
Description written by Ben Harvey (2009) (1) Cabioc’H, J., Floc’H, J. & Le Toquin, A., 1992. Guide mes algues des mers d’Europe. Paris: Delachaux et Niestle. (2) Graham, L.E. & Wilcox, L.W., 2000. Algae. New Jersey: Prentice-Hall Inc. (3) Guiry, M.D. (2009). Zonaria. In: Guiry, M.D. & Guiry, G.M. (2009). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=144093 on 2009-09-02 (4) IUCN, 2009. IUCN Red List of Threatened Species. [Online] (2009.1) Available at: www.iucnredlist.org [Accessed 01 September 2009].