FIGURE 3 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959

FIGURE 3. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: ZH0003). A—Filamentous and tubular thalli, B—single tubular thalli, C—mineral incrustation on surface of thalli, D—irregular arrangement of cells, E—cells with 2–4 pyrenoids, F—formation of proliferations from swollen cell.