Oscillatoria, a blue-green filamentous alga w.m.
Oscillatoria, thin sections specially stained to show the nuclear material
Oscillatoria, mucous sheath stained, w.m.
Nostoc, w.m. shows filaments and heterocysts
Nostoc, section for finer details of filaments and sheaths
Nostoc or other blue-green alga, special preparation for nuclear material, Feulgen stain *
Nostoc gunnerae, symbiotic algae living in the stem of Gunnera, section
Nostoc zetterstettii, a gelatinous alga, unbranched filaments, w.m.
Nostoc caeruleum, unbranched filaments, w.m.
Anabaena or Oscillatoria, nuclear stain
Anabaena, thread shaped blue-green algae with heterocysts w.m.
Aphanizomenon, single filaments of various length w.m.
Aphanothece, small single cells in colonies w.m.
Arthrospira, filaments in regular spirals w.m.
Beggiatoa, a colourless alga showing lack of chlorophyll
Chroococcus, large single celled blue-green algae w.m.
Cylindrospermum, with heterocysts and spores w.m.
Fischerella (Hapalosiphon), branched filaments w.m.
Gloeocapsa, small colonies within sheaths w.m.
Gloeotrichia, forming akinetes w.m.
Lyngbya, filamentous algae within sheaths w.m.
Merismopedia, flat colonies w.m.
Microcystis, irregular colonies w.m.
Ophridium versatile, a gelationous alga, filaments with heterocysts