Deparia acrostichoides
Encyclopedia
The silvery glade fern (Deparia acrostichoides) is a common fern in stream bottoms throughout much of the eastern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It often forms extensive colonies, growing from creeping crowns. The indusia turn silvery when the sori are close to ripening, hence the name.
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