Fig. 13 .--Filmy fern on sandstone, Ozark Creek, 2 miles south of Ozark, Johnson County, Decem- 
ber 9, 1959, The largest patch is near the base of the cliff. The arrow points toa small patch higher up 
the cliff. Because the forest has been cleared from the front of the escarpment, this stand of filmy fern 
may be doomed to destruction. 
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