Trisha Shetty (Editor)

Leptosporangiate fern

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Kingdom  Plantae
Scientific name  Polypodiopsida
Rank  Class
Division  Pteridophyta
Higher classification  Vascular plant
Leptosporangiate fern Flickriver Most interesting photos tagged with leptosporangiate

Lower classifications  Polypodiales, Tree ferns, Water ferns, Ophioglossales, Mosquito ferns

Difference between eusporangiate and leptosporangiate ferns

Leptosporangiate ferns are the largest group of living ferns, including some 11000 species worldwide. They constitute the subclass Polypodiidae, but are often considered to be the class Pteridopsida or Polypodiopsida, although other classifications assign them a different rank. The leptosporangiate ferns are one of the four major groups of ferns, with the other three being the eusporangiate ferns comprising the marattioid ferns (Marattiidae, Marattiaceae), the horsetails (Equisetiidae, Equisetaceae), and whisk ferns and moonworts.


Leptosporangiate fern Leptosporangiate fern English is not my first language so I

There are approximately 8465 species of living leptosporangiate ferns, compared with about 2070 for all other ferns, totalling 10535 species of ferns. Almost a third of leptosporangiate fern species are epiphytes.

Leptosporangiate fern httpsuploadwikimediaorgwikipediacommonsthu

These ferns are called leptosporangiate because their sporangia arise from a single epidermal cell and not from a group of cells as in eusporangiate ferns (a polyphyletic lineage). The sporangia are typically covered with a scale called the indusium, which can cover the whole sorus, forming a ring or cup around the sorus, or can also be strongly reduced to completely absent. Many leptosporangiate ferns have an annulus around the sporangium, which ejects the spores.

Leptosporangiate fern sharontaxonomy2009p3 Ferns

Leptosporangiate fern life cycle


Leptosporangiates include the vast majority of extant ferns. Only groups that branched off early from the fern lineage, which retain a eusporangium, are not included. Multiple attempts have been made to classify ferns. The classification scheme proposed by Smith et al. 2006 is the most widely accepted. More recent analyses by and Christenhusz et al. 2011 and Christenhusz & Chase 2014 offer additional insight into the group.

  • Order Osmundales (royal ferns)
  • Family Osmundaceae (4 genera, c. 25 species)
  • Order Hymenophyllales (filmy ferns and bristle ferns)
  • Family Hymenophyllaceae (2 genera, c. 650 species)
  • Order Gleicheniales
  • Family Gleicheniaceae (incl. Dicranopteridaceae, Stromatopteridaceae) (6 genera, c. 165 species)
  • Family Dipteridaceae (incl. Cheiropleuriaceae) (2 genera, 9 species)
  • Family Matoniaceae (2 genera, 4 species)
  • Order Schizaeales
  • Family Schizaeaceae(incl. Anemiaceae, Lygodiaceae, Mohriaceae) (4 genera, 190 species)
  • Order Salviniales
  • Family Marsileaceae (incl. Pilulariaceae) (3 genera, c. 65 species)
  • Family Salviniaceae (incl. Azollaceae) (2 genera, c. 20 species)
  • Order Cyatheales
  • Family Cyatheaceae (incl. Alsophilaceae, Cibotiaceae, Culcitaceae, Dicksoniaceae, Hymenophyllopsidaceae, Lophosoriaceae, Loxsomataceae, Metaxyaceae, PlagiogyriaceaeThyrsopteridaceae) (14 genera, c. 700 species)
  • Order Polypodiales
  • Family Cystodiaceae (a single species, Cystodium sorbifolium)
  • Family Lonchitidaceae (1 genus, 2 species)
  • Family Lindsaeaceae (6 genera, c. 220 species)
  • Family Saccolomataceae (2 genera, c. 12 species)
  • Family Dennstaedtiaceae (incl. Hypolepidaceae, Monachosoraceae, Pteridiaceae) (10 genera, c. 240 species)
  • Family Pteridaceae (incl. Acrostichaceae, Actiniopteridaceae, Adiantaceae, Anopteraceae, Antrophyaceae, Ceratopteridaceae, Cheilanthaceae, Cryptogrammaceae, Hemionitidaceae, Negripteridaceae, Parkeriaceae, Platyzomataceae, Sinopteridaceae, Taenitidaceae, Vittariaceae) (c. 44 genera, c. 1150 species)
  • Family Aspleniaceae sensu lato (formerly eupolypods II, Blechnales, Athyriales, Aspleniales, or Thelypteridales) (c. 22 genera, c. 2780 species)
  • Subfamily Cystopteridoideae, formerly Cystopteridaceae
  • Subfamily Rhachidosoroideae, formerly Rhachidosoraceae
  • Subfamily Diplaziopsidoideae, formerly Diplaziopsidaceae
  • Subfamily Asplenioideae, formerly Aspleniaceae sensu stricto (incl. Hemidictyaceae)
  • Subfamily Thelypteridoideae, formerly Thelypteridaceae
  • Subfamily Woodsioideae, formerly Woodsiaceae
  • Subfamily Blechnoideae, formerly Blechnaceae (incl. Onocleaceae, Stenochlaenaceae)
  • Subfamily Athyrioideae, formerly Athyriaceae
  • Family Polypodiaceae sensu lato (formerly eupolypods I
  • Subfamily Didymochlaenoideae
  • Subfamily Hypodematioideae, formerly Hypodematiaceae
  • Subfamily Dryopteridoideae, formerly Dryopteridaceae (incl. Aspidiaceae, Bolbitidaceae, Elaphoglossaceae, Peranemataceae)
  • Subfamily Lomariopsidoideae, formerly Lomariopsidaceae (incl. Nephrolepidaceae)
  • Subfamily Tectarioideae, formerly Tectariaceae
  • Subfamily Oleandroideae, formerly Oleandraceae
  • subfamily Davallioideae, formerly Davalliaceae
  • subfamily Polypodioideae sensu stricto, formerly Polypodiaceae sensu stricto (incl. Drynariaceae, Grammitidaceae, Gymnogrammitidaceae, Loxogrammaceae, Platyceriaceae, Pleurisoriopsidaceae)
  • Phylogenic relationships

    The following phylogram shows a likely relationship between the other vascular plant classes and the leptosporangiate ferns. It was formerly unclear about the relationship between Equisetopsida, Psilotopsida, and Marattiopsida, but recent studies have shown that Equisetopsida is most likely sister to Psilotopsida.

    Discussion of Molecular Classification

    There has been some challenge to recent molecular studies, claiming that these provide a skewed view of the phylogenetic order because they do not take into account fossil representatives. However, the molecular studies have clarified relations among families that had already been thought to be polyphyletic before the advent of molecular information but that were left in their polyphyletic ranks because there was not enough information to do otherwise. The classification of ferns using these molecular studies, which have generally supported one another, reflects the best information available at present, because traditional morphological characters are not always informative in elucidating evolutionary relationships among ferns


    Leptosporangiate fern Wikipedia