FIGURE 9 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959

FIGURE 9. Ulva sp. (Voucher code: WA0000019410). A—Cluster of highly mineralized thalli (arrow), B—stained filamentous thalli of Ulva (arrows), C—filamentous thallus (arrow) with numerous crystals and diatoms periphyton, D—single branch (arrow), highly covered with periphyton and CaCO , E and F—apical cells of proliferation (arrows), G—thick cells (arrow) of the uniseriate branches.