Fig. 3From: An updated phytoplankton check-list for the Helgoland Roads time series station with eleven new records of diatoms and dinoflagellatesa–e Examples of new records (continued): a–c Morphological variants of the bipolar centric diatom Odontella longicruris (two sampling dates: a, c September 27th, 2016, b August 24th, 2017), d, e the toxic dinoflagellate Alexandrium ostenfeldii (d live cell, b calcofluor-stained cell), f the toxic thecate dinoflagellate Dinophysis triposBack to article page