Cinnamon fern is common all over eastern North America. You'll find it in shady swamps and wetlands along creeks and streams. Well, ferns don't make seeds. Do they? Back in the Middle Ages, and well ...

Gadshill: “We have the receipt of fern-seed, we walk invisible.” Chamberlain. “Now, by my faith, I think you are more beholding to the night than to fern-seed for your walking invisible. – Shakespeare ...