Open Access Research Paper Views (762) The ecology and morphological variation of Hypnea (red algae) species in Iran Fateme Sargazi, Masoud Sheidai, Hossein Riahi J. Biodiv. & Environ. Sci. 5(6), 312-317, December 2014. Keywords: Hypnea, Special branches or branchlets, Tetrasporange, Variations Details