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Didymosphenia geminata
Didymosphenia geminata
Seneca Creek in eastern West Virginia
Seneca Creek in eastern West Virginia
Signs posted by Biosecurity NZ to warn of didymo threat in Waiau River.
Signs posted by Biosecurity NZ to warn of didymo threat in Waiau River.
Sign on New York's Esopus Creek advising anglers about didymo
Sign on New York's Esopus Creek advising anglers about didymo
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Diatom
Diatom
Intricate structures of the diatom Areolae (hexagonal or polygonal boxlike perforation with a sieve present on the surface of diatom) Striae (pores, p
Intricate structures of the diatom Areolae (hexagonal or polygonal boxlike perforation with a sieve present on the surface of diatom) Striae (pores, punctae, spots or dots in a line on the surface) Raphe (slit in the valves) Central nodule (thickening of wall at the midpoint of raphe) Stigmata (holes through valve surface which looks rounded externally but with a slit like internal) Punctae (spots or small perforations on the surface) Polar nodules (thickening of wall at the distal ends of the raphe)
Selections from Ernst Haeckel's 1904 Kunstformen der Natur (Art Forms of Nature), showing pennate (left) and centric (right) frustules.
Selections from Ernst Haeckel's 1904 Kunstformen der Natur (Art Forms of Nature), showing pennate (left) and centric (right) frustules.
Light microscopy of a living diatom. Numbered graduations are 10 micrometres apart
Light microscopy of a living diatom. Numbered graduations are 10 micrometres apart