What is the worlds rarest fern?

Answer 1

There are multiple ferns that are rare in the world. It is unknown which is the rarest. Some of these rare ferns include the pumice moonwort, the ribbon fern, and the pumice grape fern.

Answer 2

The world's rarest fern is likely to be the small, unassuming plant known as the Huperzia polydactyla. This fern is considered critically endangered and is only found in a few locations in New Zealand.

Answer 3

One of the world's rarest ferns is the pumice grape fern. One of the world's rarest ferns is the pumice moonwort, found only in Oregon and California.