List of POLYPODIOPSIDA species in St. Helena



This is a list of POLYPODIOPSIDA in St. Helena according to the IUCN Red List.

This list was last updated 2019-09-14

 

This list contains only species that have been assessed for the IUCN Red List. It is therefore not representative of all the species in the country.

Species counts by country: Total | Amphibians | Birds | Fish | Mammals | Reptiles | Vascular Plants.

scientific_namecommon_nametaxonidcategory
Hymenophyllum capillaceum St Helena Filmy Fern 67373107 EN
Asplenium compressum Plastic Fern 67373125 VU
Dicksonia arborescens St Helena Tree Fern 67370081 VU
Pteris paleacea Lays-back Fern 67374190 LC
Elaphoglossum furcatum Mossy Fern 67410036 NT
Pseudophegopteris dianae Brown-scale fern 67374221 LC
Diplazium filamentosum Black-scale Fern 67373719 LC
Asplenium haughtonii Barn Fern 67373229 CR
Elaphoglossum dimorphum Toothed Tongue-fern 44727 CR
Elaphoglossum nervosum Veined Tongue-fern 44728 CR
Trichomanes angustatum 43913 LC
Dryopteris cognata Large Kidney Fern 67373923 CR
Dryopteris napoleonis Small Kidney Fern 67373944 EN
Elaphoglossum lasiolepium 43914 DD
Asplenium aequibasis 43916 LC
Athyrium medium 43917 LC
Asplenium ascensionis 43918 VU
Anogramma ascensionis Ascension Island Parsley Fern 43919 CR
Dryopteris ascensionis 43920 EX
Pteris adscensionis 43924 CR
Ptisana purpurascens 43922 CR
Stenogrammitis ascensionensis 43925 CR

 

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Species are classified by the IUCN Red List into nine groups:
  • Extinct (EX) – beyond reasonable doubt that the species is no longer extant.
  • Extinct in the wild (EW) – survives only in captivity, cultivation and/or outside native range, as presumed after exhaustive surveys.
  • Critically endangered (CR) – in a particularly and extremely critical state.
  • Endangered (EN) – very high risk of extinction in the wild, meets any of criteria A to E for Endangered.
  • Vulnerable (VU) – meets one of the 5 red list criteria and thus considered to be at high risk of unnatural (human-caused) extinction without further human intervention.
  • Near threatened (NT) – close to being at high risk of extinction in the near future.
  • Least concern (LC) – unlikely to become extinct in the near future.
  • Data deficient (DD)
  • Not evaluated (NE)