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Volume 14, 1881
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Explanation of Plate XXIII.
  • Fig. 1. Chætophora, showing stipitate fructification; (a) filament, (b) antheridial filament, (c) zoospore.

  • " 2. Cladophora (a) ordinary cells. (b)sporiferous cells.

  • " 3. " (a) portion of filament. (b) antheridial filament. (c) zoospores.

  • " 4. Spirogyra.

  • " 5. Oscillatoria with sporidial cells.

  • " 6. Micrasterias ampullacea, var. β.

  • " 7. Cosmarium, sp.?

  • " 8. Staurastrum, sp.?

  • " 9. Pediastrum pertusum.

  • " 10. " sp.? (a) front. (b) end.

  • " 11. Scenedesmus quadricauda.

  • " 12. Synedra ulna—to illustrate sporidial multiplication.