''Blechnum appendiculatum'' is a

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except ...

in the family

Blechnaceae Blechnaceae is a family of ferns in the order Polypodiales, with a cosmopolitan distribution. Its status as a family and the number of genera included have both varied considerably. In the Pteridophyte Phylogeny Group classification of 2016 ...

. Its native range is from the southern United States through Mexico, the Caribbean and Central America to western South America.

References

Blechnaceae Flora of the Caribbean Flora of Central America Flora of Mexico Flora of northern South America Flora of the South-Central United States Flora of the Southeastern United States Flora of western South America Flora without expected TNC conservation status {{Polypodiales-stub