Biology:Dennstaedtiaceae

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Short description: Family of ferns

Dennstaedtiaceae
Temporal range: Cenomanian–Recent
Fern dsc06699.jpg
Pteridium aquilinum
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Dennstaedtiineae
Schwarstb. & Hovenkamp
Family: Dennstaedtiaceae
Lotsy
Genera[1]
Synonyms
  • Hypolepidaceae Pichi-Sermolli 1970
  • Monachosoraceae Ching 1978
  • Pteridiaceae Ching 1975

Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes (ferns). It comprises 10 genera with ca 240 known species,[2] including one of the world's most abundant ferns, Pteridium aquilinum (bracken). Members of the order generally have large, highly divided leaves and have either small, round intramarginal sori with cup-shaped indusia (e.g. Dennstaedtia) or linear marginal sori with a false indusium formed from the reflexed leaf margin (e.g. Pteridium). The morphological diversity among members of the order has confused past taxonomy, but recent molecular studies have supported the monophyly of the order and the family.[3] The reclassification of Dennstaedtiaceae and the rest of the monilophytes was published in 2006,[3] so most of the available literature is not updated.


Distribution of genera

Generally, the family is pantropical, but due to the distribution of Pteridium (the most widespread fern genus), Dennstaedtiaceae can be found worldwide.[4] Pteridium is a well adapted early successional genus, generally described as a weed because of its ease of spread. The spore is light and robust, so it can travel relatively far and colonise open, disturbed environments easily.[5] Dennsteadtia is mostly tropical to warm-temperate, but not well represented in the Amazon or Africa. Oenotrichia is in New Caledonia. Leptolepia is in New Zealand, Queensland (Australia), and in New Guinea. Microlepia is in the Asiatic-Pacific. Paesia occurs in tropical America, Asia, and the western Pacific. Hypolepis is tropical and south-temperate. Blotiella is strongly centered in Africa. Histiopteris is generally Malesian, with one pantropic to south-temperate species.[6] The extinct genus Krameropteris is known from remains found in Cenomanian aged Burmese amber.[7]

History of classification

Dennstaedtiaceae was previously considered the only family the order Dennstaedtiales. Dennstaedtiaceae now contains the previously defined families Monachosoraceae Ching, Pteridiaceae Ching, and Hypolepidaceae Pic. Serm.[3] Before Smith's [3] classification in 2006, Dennstaedtiaceae was a poly- and para- phyletic family,[8][9][10] containing genera that now are classified within Lindsaeaceae and Saccolomataceae, and with the family Monachosoraceae arising from within the Dennstaedtiaceae clade.[3] The nonmonophyletic nature of Dennstaedtiaceae (pre-2006 classification) was proved and supported by multiple molecular studies. Dennstaedtiaceae as now classified is supported as monophyletic, but the relation of the genera within the family have not yet been fully clarified.[10]

Phylogeny of Dennstaedtiaceae[11][12]

 
Monachosoroideae

Monachosorum Kunze 1848

 
Dennstaedtioideae
Microlepieae
 
 

Paradennstaedtia Tagawa 1952

 
 
 
 

Leptolepia Mettenius ex Kuhn

 
 

Oenotrichia Copeland 1929

 
 
 

Dennstaedtia Moore 1859 non Bernhardi 1801

 
 
 
 
 

Dennstaedtia species-group 2

 
 
 

Dennstaedtia species-group 3

 
 

Microlepia Presl 1836

 
 
 
 
Hypolepideae
 

Pteridium Gleditsch ex Scopoli 1760 nom. cons. non Rafinesque 1814

 
 
 
 

Paesia Saint-Hilaire 1833

 
 
 

Hiya Shang 2018

 
 
 

Histiopteris (Agardh 1839) Smith 1875

 
 

Blotiella Tryon 1962

 
 
 
 
 

Hypolepis Bernhardi 1805 non Palisot de Beauvois ex T. Lestib. 1819 non Nees 1829 non Pers. 1807

 
 
 
 
 

Interesting species within Dennstaedtiaceae

Dennsteadtiaceae species and genera are usually known for their weedy nature (i.e. Pteridium spp., Hypolepis spp., Paesia spp.), but some species are grown ornamentally (Blotiella spp., Dennstaedtia spp., Hypolepis spp., Microlepia spp.).[13]
The fiddleheads/crosiers of Pteridium aquilinum have been known to be eaten, but they contain carcinogens, so this practice is not prevalent.[14]
The rhizomes of Pteridium esculentum were consumed by the Maori during their settlement of New Zealand in the 13th century, but no longer are a part of the Maori diet.[5] The rhizomes of Pteridium esculentum contain about 50% starch when they grow in loose rich soil, at relatively deep depths.[5] The rhizomes were a staple in the diet because once dried, the rhizomes were very light (perfect for travelling) and would keep for about a year as long as they remained dry.[5] The leaves and spores of the Pteridium esculentum are associated with toxins and carcinogens, and have been known to cause stock (cattle, sheep, horses, pigs) to sicken.[5]

References

  1. ↑ Dennstaedtiaceae Pic.Serm. Plants of the World Online. Retrieved 22 January 2024.
  2. ↑ Christenhusz, M. J. M.; Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa (Magnolia Press) 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1. http://biotaxa.org/Phytotaxa/article/download/phytotaxa.261.3.1/20598. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Smith, A. R., K. M. Pryer, et al. (2006). "A classification for extant ferns." Taxon 55(3): 705-731
  4. ↑ Thomson, J. (2000). "Morphological and Genomic Diversity in the Genus Pteridium (Dennstaedtiaceae)." Annals of Botany 85(Suppl B): 77-99
  5. ↑ 5.0 5.1 5.2 5.3 5.4 McGlone, M. S., J. M. Wilmshurst, et al. (2005). "An ecological and historical review of bracken(Pteridium esculentum) in New Zealand, and its cultural significance." New Zealand Journal of Ecology 29(2): 165-184
  6. ↑ Kramer, K. U. (1990). Dennstaedtiaceae. The Families and Genera of Vascular Plants: Pteridophytes and Gymnosperms. K. Kubitzki, K. U. Kramer and P. S. Green. New York, Springer-Verlag. 1: 81-94
  7. ↑ Schneider, Harald; Schmidt, Alexander R.; Heinrichs, Jochen (February 2016). "Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns" (in en). Perspectives in Plant Ecology, Evolution and Systematics 18: 70–78. doi:10.1016/j.ppees.2016.01.003. https://linkinghub.elsevier.com/retrieve/pii/S1433831916300038. 
  8. ↑ Wolf, P. G. (1997). "Evaluation of atpB Nucleotide Sequences for Phylogenetic Studies of Ferns and Other Pteridophytes." American Journal of Botany 84(10): 1429-1440
  9. ↑ Hasebe, M., P. G. Wolf, et al. (1995). "Fern Phylogeny Based on rbcL Nucleotide Sequences." American Fern Journal 85(4): 134-181
  10. ↑ 10.0 10.1 Wolf, P. G. (1995). "Phylogenetic Analyses of rbcL and Nuclear Ribosomal RNA Gene Sequences in Dennstaedtiaceae." American Fern Journal 85(4): 306-327
  11. ↑ Nitta, Joel H.Expression error: Unrecognized word "et". (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science 13: 909768. doi:10.3389/fpls.2022.909768. PMID 36092417. 
  12. ↑ "Tree viewer: interactive visualization of FTOL". 2023. https://fernphy.github.io/viewer.html. 
  13. ↑ Mabberley, D. J. (1997). The Plant-Book, Cambridge University.
  14. ↑ Judd, W. S., C. C. Campbell, et al. (2008). Plant Systematics: A Phylogenetic Approach. Sunderland, Ma, Sinauer Associates, Inc.

Wikidata ☰ Q358326 entry



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