Notholaena

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Genus of ferns

title: "Notholaena" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["notholaena", "fern-genera"] description: "Genus of ferns" topic_path: "general/notholaena" source: "https://en.wikipedia.org/wiki/Notholaena" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Genus of ferns ::

| image = Notholaena standleyi.jpg | image_caption = Notholaena standleyi | taxon = Notholaena | authority = R.Br. | subdivision_ranks = Species | subdivision = See text.

Notholaena is a genus of ferns known as cloak ferns in the family Pteridaceae. Members of the related genera including Aleuritopteris, Argyrochosma, Pentagramma, as well as several genera and species in other subfamilies of Pteridaceae, also exhibit farina on the lower leaf surface. Meanwhile, gametophytic farina is almost exclusively observed in Notholaena, with only occasional spontaneous occurrences reported in Argyrochosma and Aleuritopteris.

The similar genus Argyrochosma also has farinose leaves, but in that genus the ultimate segments of the leaves have entire margins and are distinctly stalked, whereas in Notholaena the ultimate segments are usually lobed or pinnatifid and sessile or subsessile. Notholaena has in the past been used as a "catch-all" genus for a wide variety of species that did not fit well in other arid fern genera but it has more recently been defined in a much narrower sense, making the genus much more morphologically and evolutionarily coherent. The genera Argyrochosma and Astrolepis were recently segregated from Notholaena, and other former members of Notholaena are now in the genus Cheilanthes.

Etymology

The genus was first described in 1810 by Robert Brown. The name is derived from the Greek νόθος (nothos), "false", and χλαῖνα (chlaena), "cloak". This refers to the fact that the sori are not covered by well-differentiated tissue of the leaf margin.

Members of the genus Notholaena as historically defined, are commonly known as "cloak ferns".

Species

, the Checklist of Ferns and Lycophytes of the World recognized the following thirty-four species:

References

Sources

References

  1. {{PLANTS
  2. (2012). "Unique expression of a sporophytic character on the gametophytes of notholaenid ferns (Pteridaceae)". American Journal of Botany.
  3. (2000-10-01). "Lipophilic exudates of Pteridaceae – chemistry and chemotaxonomy". Biochemical Systematics and Ecology.
  4. (July 2012). "Farina Production by Gametophytes of Argyrochosma nivea (Poir.) Windham (Pteridaceae) and its Implications for Cheilanthoid Phylogeny". American Fern Journal.
  5. (2015-04-02). "Farina Observation in Gametophytes of Aleuritopteris squamosa (Pteridaceae), with Comments on Its Phylogenetic Significance". Journal of Tropical and Subtropical Botany.
  6. {{cite WF
  7. (18 February 2011). "A linear sequence of extant families and genera of lycophytes and ferns". [[Phytotaxa]].

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