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Elongated non-motile green unicells
46 Ankistrodesmus acicula ris (Monoraphidium aciculare) (p.40);
up to 200 pm long, a dividing cell; kbundle of young cells;
c vegetative cell.
47 Koliella longiseta (Raphidonema longiseta) (p.43); up to
150 pm long, a, b vegetative cells; c cells about to divide;
d young cell before elongation.
48 Ankistrodesmus fusiformis (p.40) ; up to 100 pm long,
a group of cells in characieristic arrangement; b single cell
enlarged.
49 Ankistrodesmus falcatus (p.40) ; up to 80 pm long, a single
cell; b, c two-celled and four-celled bundles.
50 Elakatothrix gelatinosa (p.43); up to 30 pm long, usually
two cells in mucilage envelope.
51 Gloeotila pelagica (p.43); filament about 2 pm wide.
52 Ankyra judayi (p.41) ; up to 100 pm long.
53 Sdenedesmus acuminatus (p.44) ; unicellular stage, up to
30 pm long.