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(Left) Film sequence of mycelial growth on agar. Arrows indicate germinating spores in the upper left figure. The pictures were taken about 16, 18, 22, and 27 hours after plating the spores. Bar, 100 µm (From H.H. Heunert). (Right) Mycelia after four days of growth at 22°C in the light. Sporulation will start once vegetative growth is completed. Phycomyces develops specialized aerial structures, the sporangiophores, containing the spores. The photograph was taken under a 40x microscope. Photograph by Luis M. Corrochano.

Next step in the life cycle: sporangiophore initiation

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