first fern read up from the bottom which way does mind flow go i & i want to know pteridologist A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta. The group is also referred to as polypodiophyta, or polypodiopsida … Continue reading hello wiki/wikia – hello clippinger – hello fern