Figure 2 in New records from the southern North Sea and first records from the Baltic Sea of Kornmannia leptoderma

Figure 2: Life cycle stages of Kornmannia leptoderma, raised from material collected in Mönkeberg (A–E) and Heiligenhafen (F–H). Primary thallus disks after (A) 3 months, (B) 4 months and (C) 10 months, in (C) surrounded by five secondary thallus disks. (D) secondary basal disk bearing a young erect tubular thallus on the left and newly germinated filaments on the right (after 12 months). (E) primary disk and two dead tubular thalli (after 15 months). (F) and (G) primary basal disk bearing two erect tubular thallus branches of different size and surrounded by early filamentous stages of secondary disks (5.5 months). (H) biflagellate swarmer. Arrows indicate flagella in (H) and tubular sporophytes in other images, the latter appear often blurred because images were taken with an inverted microscope through the bottom of the culture vessel. Length of scale bars: 50 µm in (A), (B), (D), (F) and (G), 1 mm in (C) and (E), 20 µm in (H).