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A B
  1. widely lobed, finely striped, frayed margin;
  1. often thickened edge;
  1. tetrasporangial conceptacles chambers:
    • 300-700µm (in diameter);
    • 205-280µm (high);
  1. cells of basal filaments:
    • 12-25(40)µm x 7-15 (20)µm;
  1. cells of erect filaments:
    • 8-20(28)µm x 6-13µm.

Neogoniolithon brassica-florida
  1. coarsely lobed, often frayed margin;
  1. edge grown thin,
  1. tetrasporangial conceptacles chambers:
    • 280-410µm (in diameter);
    • 100-200µm (high);
  1. cells of basal filaments:
    • (5-15)18(28)µm x (3)6-7(9)µm;
  1. cells of erect filaments:
    • (5-7)9(12)µm x 5-8µm.

Neogoniolithon mamillosum
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