From where? An online nursery?
If you were thinking from this site, this isn't a plant nursery. It's a gardening site where "gardeners can access a vast and rich resource of articles, information, community features, gardening research, software tools, and all manner of gardening content to find how to grow all kinds of plants, identify and control pests and diseases, or figure out what kind of weeds are sprouting in the garden."
http://garden.org/about/
It also has the world's largest and most complete plant database, containing over 375,000 photos of almost 700,000 plants.
Did you perhaps see a fern photo from one of the database entries here?