FIGURE 5 in The Ulva flexuosa complex (Ulvaceae, Chlorophyta): an updated identification key with special reference to the freshwater and hyperhaline taxa

FIGURE 5. Habitats and morphology of U. flexuosa subsp. paradoxa (Voucher code: AMU-DH-U0121). A—canal with Ulva thalli on the bottom (arrow) (station No. 38), B—numerous uniseriate branches (arrows), C and D—elongated and conical apical cells (arrows) of uniseriate branches, E—cells arranged in long rows (arrow), F—stained pyrenoids (2–3 in a single cell), G—formation of zoospores in the apical part of the thallus, H—uniseriate branch with elongated and rounded apical cell (arrow), I—branch with rectangular cells (arrow). Photo credits: A–I, A.S. Rybak.