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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
	Celanthera Thouin; Myriotheca Commerson ex de Jussieu non Zeiller; Discostegia Presl; Stibasia Presl; †Angiopteridium Schimper;

Marattia is a small genus of primitive, large, fleshy eusporangiate ferns. It is the type genus of the family Marattiaceae, order Marattiales and class Marattiopsida.^[1] 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.^[2]^[3] 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.

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^[4]^[5]

M. douglasii

M. laxa

	M. alata

	M. weinmanniifolia

References

^ Smith, Alan R.; Kathleen M. Pryer; Eric Schuettpelz; Petra Korall; Harald Schneider; Paul G. Wolf (2006). "A classification for extant ferns" (PDF). Taxon. 55 (3): 705–731. doi:10.2307/25065646. JSTOR 25065646. Archived from the original (PDF) on 2008-02-26.
^ 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.
^ 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. doi:10.1002/tax.573007.
^ 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. doi:10.3389/fpls.2022.909768. PMC 9449725. PMID 36092417.
^ "Tree viewer: interactive visualization of FTOL". FTOL v1.3.0. 2022. Retrieved 12 December 2022.