NEEFUS, Christopher D., Arthur C. MATHIESON, Troy L. BRAY, & Charles YARISH 2008 (Dec) The distribution, morphology, and ecology of three introduced Asiatic species of Porphyra (Bangiales, Rhodophyta) in the northwestern Atlantic Journal of Phycology 44(6): 1399-1414, 4 figs., 3 tables introductions of Porphyra are more common than previously thought |