Polypodiaceae

Usually Polypody ( Polypodium vulgare)

The Tüpfelfarngewächse ( Polypodiaceae ) constitute a family of the Department of ferns ( Polypodiophyta ).

Features

There are plants that form a crawling, enveloped by chaff shed rhizome. That are the most little indented, usually simply pinnate fronds or fiederschnittigen. Often the leaf blade is relatively coarse. In many species the sterile leaves and sporophylls are designed differently. Some species even have two types of sterile leaves ( Heterophyllie ).

Your name have the Tüpfelfarne of the circular sori, usually without a veil ( indusium ) are located on the underside of leaves. The leaves get thus a typical speckled appearance. In some species the sori go but into each other, so that the bottom of the sporophylls is then completely covered with sporangia.

Dissemination

It is mostly tropical and subtropical ferns. Only a few species occur in the temperate latitudes, in Europe for example, only four types of Tüpfelfarne ( Polypodium ). Some species, however, have significance as house plants (such as the Goldtüpfelfarn ( Phlebodium aureum ) ).

Among the Tüpfelfarnen there are many epiphytes.

System

The breakdown of the family of Tüpfelfarngewächse ( Polypodiaceae ) is controversial. Depending on the view, there are between 10 and 50 genera with between 500 and 1200 species. In any case, it is the most species-rich fern family.

  • Acrosorus Copel. , With about five species between Malaysia's and the Samoa Islands
  • Adenophorus Gaudich. , With about eight species in Hawaii
  • Aglaomorpha Schott (including Photinopteris, Merinthosorus, Pseudodrynaria, Holostachyum ), with about nine species from tropical Asia and New Guinea
  • Arthromeris ( T. Moore) J. Sm, with about 9-18 species that occur between India and China
  • Belvisia Mirbel, with about 9-25 species in the tropics of Asia and Africa
  • Calymmodon C. Presl, with about 5-25 species that occur between Indomalesien and the Pacific Islands
  • Riemenfarn ( Campyloneurum C. Presl ), with about 25-45 species in tropical America
  • Ceradenia L. E. Bishop, with about 40 species
  • Christopteris Copel. , With about two species in Southeast Asia and New Caledonia
  • Chrysogrammitis Parris, with one or two species in Southeast Asia and New Guinea
  • Cochlidium Kaulf. , With about 12 species
  • Colysis C. Presl, with about 30 species in tropical Africa and Asia
  • Ctenopteris Blume ex Kunze, with about 21 species in the tropics
  • Dicranoglossum J. Sm, with about five species in tropical America
  • Dictymia J. Sm, with up to four species between Australia, New Guinea and the Fiji Islands
  • Drynaria ( Bory ) J. Sm, with about 20 species in the tropics, including: Eichenblättriger Korbfarn ( Drynaria quercifolia (L.) J. Sm ), which occurs in the Malay Archipelago, Australia, and Polynesia

Then there are the genera that comprise only a recognized type:

  • Caobangia A.R. Sm & X.C. Zhang, with the type: Caobangia squamata A.R. Sm & X.C. Zhang in Vietnam
  • Drymotaenium miyoshianum ( Makino ) Makino in Japan and Taiwan
  • Gymnogrammitis dareiformis ( Hook. ) Ching in India
  • Kontumia heterophylla S.K. Wu & P.K. Loc in Vietnam
  • Luisma bivascularis M. T. Murillo & A.R. Sm
  • Neurodium lanceolatum (L.) Fée
  • Pleurosoriopsis makinoi ( Maxim. ex Makino ) Fomin in China and Japan
  • Podosorus angustatus Holttum in the Philippines
  • Synammia feuillei ( Bertero ) Copel. , Which occurs in Chile
  • Themelium taxodioides ( Baker) Parris
  • Thylacopteris papillosa ( flower) J. Sm
Leptosporangiate fern Jan Svatopluk Presl Platycerium
655759
de