"Isoetes engelmannii" is an emergent aquatic perennial pteridophyte. It is home to nearly 4,000 pteridophyte and spermatophyte plant species. There are 67 species and one subspecies of pteridophyte assessed as endangered. There are 83 species and one subspecies of pteridophyte assessed as vulnerable. It was one of the original pteridophyte genera delineated by Linnaeus. The region provides shelter to various thallophyte, bryophyte, pteridophyte, gymnosperm, and angiosperm species. There are 67 species and three varieties of pteridophyte assessed as critically endangered. The Pteridophyte Phylogeny Group (2016) classification retains this rank. There are 113 species, three subspecies, and one variety of pteridophyte assessed as least concern. Herbaceous plants include Fiershqipja (Pteridophyte), strawberries, blueberries, and blackberries. The approach was followed by the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The Pteridophyte Phylogeny Group classification of 2016 (PPG I) included four genera. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) retained the family. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) maintained the four genera. In 2016, the Pteridophyte Phylogeny Group divided order Polypodiales into six suborders.