molecular phylogenetic classification of Smith et al. in 2006, the Hymenophyllales, containing the single family Hymenophyllaceae, were placed in class...

O S D C P T J K Pg N Psilotales Equisetales Marattiales Osmundales Hymenophyllales Gleicheniales Cyatheales Polypodiales Scientific classification Kingdom:...

which corresponds to four Polypodiidae orders in more modern systems: Hymenophyllales, Gleicheniales, Schizaeales and Cyatheales. The unplaced families include:...

ferns; 7 extant orders Order Osmundales Link – 1 extant family Order Hymenophyllales A.B.Frank – 1 extant family Order Gleicheniales Schimp – 3 extant families...

  Extinct in the wild (EW): 45 species   Critically endangered (CR): 5,702 species   Endangered (EN): 10,901 species   Vulnerable (VU): 9,673 species  ...

  Extinct in the wild (EW): 45 species   Critically endangered (CR): 5,702 species   Endangered (EN): 10,901 species   Vulnerable (VU): 9,673 species  ...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

stalks 1–3 cells thick and are often long-stalked. (In contrast, the Hymenophyllales have a stalk composed of four rows of cells.) The sporangia do not...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

  Extinct in the wild (EW): 45 species   Critically endangered (CR): 5,702 species   Endangered (EN): 10,901 species   Vulnerable (VU): 9,673 species  ...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

Hymenophyllales...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

  Extinct in the wild (EW): 45 species   Critically endangered (CR): 5,702 species   Endangered (EN): 10,901 species   Vulnerable (VU): 9,673 species  ...

  Extinct in the wild (EW): 45 species   Critically endangered (CR): 5,702 species   Endangered (EN): 10,901 species   Vulnerable (VU): 9,673 species  ...

Tracheophytes Division: Polypodiophyta Class: Polypodiopsida Order: Hymenophyllales Family: Hymenophyllaceae Genus: Hymenophyllum Subgenus: †Hymenophyllum...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

Hymenophyllales...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

other treatments, they were expanded to include the filmy ferns (order Hymenophyllales), as well as the similar-looking genus Hymenophyllopsis (as order...

†Discopteridaceae †Urnatopteridaceae Osmundales †Guaireaceae Osmundaceae Hymenophyllales Hymenophyllaceae Gleicheniales †Oligocarpiaceae Dipteridaceae Gleicheniaceae...

Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the...