RYBAK, Andrzej, Anna CZERWONIEC, Maciej GABKA, & Beata MESSYASZ 2014 (online Nov. 14) Ulva flexuosa (Ulvaceae, Chlorophyta) inhabiting inland aquatic ecosystems: molecular, morphological and ecological discrimination of subspecies European Journal of Phycology 49(4): 471-485 Three Ulva flexuosa subspecies in European inland waters: U. flexuosa subsp. pilifera and U. flexuosa subsp. paradoxa most often found |