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lepisorus

Scientific Name: Lepisorus

Family: Polypodiaceae

Category: Fern

Growth:

Duration:

Other Names:

       

Lepisorus: A Fern Genus

Lepisorus is a genus of ferns belonging to the family Polypodiaceae. It's closely related to the genera Belvisia and Lemmaphyllum and is classified within the tribe Lepisoreae.

Considerations for Pets

  • Several species, such as Lepisorus bicolor, are commonly available for sale, suggesting they may be found in homes and gardens.
  • Lepisorus species possess creeping rhizomes covered in scales, potentially posing a risk if ingested by pets or children.

Scientific Classification and Nomenclature

  • Scientific Name: Lepisorus
  • Family: Polypodiaceae (sometimes placed within Drynariaceae)
  • Major Group: Pteridophytes (Ferns and Fern Allies)
  • Synonyms and Related Names:
    • Pleopeltis nuda Hooker (for Lepisorus nudus)
    • Polypodium scolopendrium Buch.-Ham. ex D.Don (in part, for Lepisorus excavatus var. scolopendrium)
    • Lepisorus amaurolepidus var. longifolius Bir & Tirkha (synonym for Lepisorus nudus)

Common Names

  • Sechuan Ribbon Fern (for Lepisorus bicolor)
  • Weeping Fern (for Lepisorus thunbergianus)
  • Thunberg's Lepisorus (for Lepisorus thunbergianus)
  • Chinese Name for Lepisorus thunbergianus: ??

Distribution and Habitat

  • The genus is paleotropical, with species found in regions like Malesia, the Himalayas, and Southern Africa.
  • Specific locations mentioned include Nepal (type locality for Lepisorus nudus), Bulwer Biosphere (South Africa), Reunion Island, and Jeju Island (South Korea).
  • Some species, like Lepisorus thunbergianus, can be found growing on rocks.

Morphological Characteristics

  • Lepisorus are typically epiphytic herbs.
  • They possess a long, creeping rhizome, usually up to 3 mm thick, which is branched and densely covered by appressed scales (ovate to ovate-lanceolate, about 4 x 1 mm).
  • Lepisorus thunbergianus can grow to be 8-29cm tall.

Ecological Role

  • Lepisorus species often grow as epiphytes, meaning they grow on other plants without harming them.

Genetic Information

  • Phylogenetic studies have used plastid DNA sequences from regions like rbcL to investigate relationships within the genus.

Interactions with Other Organisms

  • The text mentions that some Lepisorus species are epiphytic herbs, indicating an interaction with host plants.

Quirky Facts

  • The sori (spore-producing structures) of Lepisorus thunbergianus are round and naked, lacking the indusium (protective covering) found in many other fern species.
  • Some Lepisorus species are being investigated for bioactive compounds.

Further Resources

  • BioLib.cz provides images of Lepisorus thunbergianus.
  • iNaturalist.org offers classification information.
  • World Ferns database provides species details.
  • Discover Life provides information about the biology, natural history, ecology, identification and distribution of Lepisorus pseudo-ussuriensis Tagawa.