Marattia

Marattia
Marattia douglasii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Marattiales
Family:	Marattiaceae
Genus:	Marattia Swartz
Type species
Marattia alata Swartz
Species
See text
Synonyms
CelantheraThouin MyriothecaCommerson ex de Jussieu non Zeiller DiscostegiaPresl StibasiaPresl †AngiopteridiumSchimper

Marattia is a small genus of basal, large, fleshy eusporangiate ferns.

Formerly considered to be a much larger genus, genetic analysis has shown that Marattia in the broad sense was paraphyletic, and subsequently the genera Ptisana and Eupodium were split off. ^{[1] [2]} Except for one species in Hawaii, the genus is neotropical.

The plants are large and terrestrial, with more or less erect rhizomes and fronds being 2-5 times pinnate. Sporangia are fused into synangia, and spores are monolete.

Basal chromosome count is 2n=80. The type species is M. alata.

Taxonomy

The Smith et al. classification of 2006, based on molecular phylogeny, placed Marattia in Marattiaceae. It is the type genus of the family Marattiaceae, order Marattiales and class Marattiopsida. ^[3] Subsequent classifications have maintained this placement. ^{[4] [5] [6]}

Species list

• Marattia alata Sw. – Jamaica and Cuba
• Marattia douglasii (C. Presl) Baker – pala, kapua ilio, or Hawaii potato fern; Hawaii
• Marattia excavata Underw. – Mexico to Panama
• Marattia interposita Christ – Guatemala to Panama
• Marattia laxa Kunze – Mexico to Panama
• Marattia weinmanniifolia Liebm. – southern Mexico to El Salvador

Phylogeny of Marattia ^{[7] [8]}

	M. douglasii M. laxa M. alata M. weinmanniifolia

References

1. Murdock, Andrew G. (2008). "Phylogeny of marattioid ferns (Marattiaceae) inferring a root in the absence of a closely related outgroup". American Journal of Botany. 95 (5): 626–641. doi:10.3732/ajb.2007308. PMID   21632388.
2. Murdock, Andrew G. (2008). "A taxonomic revision of the eusporangiate fern family Marattiaceae, with description of a new genus Ptisana". Taxon. 57 (3): 737–755. Bibcode:2008Taxon..57..737M. doi:10.1002/tax.573007.
3. Smith, Alan R.; Pryer, Kathleen M.; Schuettpelz, Eric; Korall, Petra; Schneider, Harald; Wolf, Paul G. (2006). "A classification for extant ferns" (PDF). Taxon . 55 (3): 705–731. doi:10.2307/25065646. JSTOR   25065646.
4. Christenhusz, Maarten J. M.; Zhang, Xian-Chun; Schneider, Harald (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa . 19: 7–54. doi:10.11646/phytotaxa.19.1.2.
5. Christenhusz, Maarten J.M.; Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany . 113 (9): 571–594. doi:10.1093/aob/mct299. PMC   3936591 . PMID   24532607.
6. PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution . 54 (6): 563–603. doi: 10.1111/jse.12229 . S2CID   39980610.
7. Nitta, Joel H.; Schuettpelz, Eric; Ramírez-Barahona, Santiago; Iwasaki, Wataru; et al. (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science. 13 909768. Bibcode:2022FrPS...1309768N. doi: 10.3389/fpls.2022.909768 . PMC   9449725 . PMID   36092417.
8. "Tree viewer: interactive visualization of FTOL". FTOL v1.3.0. 2022. Retrieved 12 December 2022.