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Fern Minimarsh
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Fern Minimarsh
Add water, set in a window, and observe. The preplanted fern spores germinate and produce the microscopic filamentous stage (1-dimensional growth) in 2 to 3 weeks.

The heart-shaped (2-dimensional growth) prothallia are obvious in 4 to 6 weeks, and sporophytes occur in 10 to 12 weeks.
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156820
Fern Minimarsh
$4.25