Osmunda claytoniana, Fern

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One pressed specimen of interrupted fern collected alongside the road between White Sulphur Springs (Greenbrier Co.), West Virginia and Callaghan (Alleghany Co.), Virginia.
The term "interrupted" describes the gap left by the reproductive portions after they die and fall off.

The fossil record of Osmunda c. has been found as far back as the Triasic Period and paleontological evidence indicates it has remained unchanged for approximately 180 million years.

Osmunda claytoniana L.