FIGURE 16 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959

FIGURE 16. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: ZH0010). A—Intestinally undulating thallus with several branches (arrows), B and C—surface of thalli with mineral incrustation (arrow), D—irregular arrangement of cells in the basal part of the thalli, E—cells with rounded edges with 2 –5 pyrenoids in single chromatophore (arrow), F—cell of uniseriate proliferation with thick cell wall (arrow), G—cells with irregularly shaped chromatophores, H—square-rectangular cells (arrow) from two-row branching.