Eupodium

Eupodium
	Eupodium laeve
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Class:	Polypodiopsida
Order:	Marattiales
Family:	Marattiaceae
Genus:	Eupodium; J.Sm.
Species
	See text

Eupodium is a genus of ferns in the family Marattiaceae native to the Neotropics. Traditionally, many taxonomists have included Eupodium within the genus Marattia (along with Ptisana). However, molecular phylogenetic studies and morphological studies of extant and fossil taxa support the recognition of Eupodium as a lineage distinct from Marattia.[1][2][3] Morphologically, Eupodium was thought to be distinct among the Marattiaceae in only having one frond at a time (occasionally two), bearing awns along veins, and having stalked synangia (clusters of sporangia that have become fused in development). However, recent phylogenetic work found that an additional species native to Brazil, Eupodium cicutifolium, which lacks these characters, is also genetically in Eupodium, making the genus harder to distinguish morphologically.[4] Eupodium cicutifolium does occasionally have short-stalked synangia, and has spinulose spores like the other Eupodium species, but is otherwise easily mistaken for a Marattia or Ptisana. The genus currently has four recognized species.[5]

The basal chromosome number for this genus is unknown. The type species is Eupodium kaulfussii.

Species

The genus includes the following species:

Eupodium cicutifolium (Kaulf.) Lehtonen
Eupodium kaulfussii (J.Sm.) J.Sm.
Eupodium laeve (Sm.) Murdock
Eupodium pittieri (Maxon) Christenh.

References

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.
Rothwell, Gar W. (2018). "Resolving the overall pattern of marattialean fern phylogeny". American Journal of Botany. 105: 1304–1314. doi:10.1002/ajb2.1115. PMID 30001474.
Lehtonen, Samuli; Poczai, Péter; Sablok, Gaurav; Hyvönen, Jaakko; Karger, Dirk N.; Flores, Jorge (2020). "Exploring the phylogeny of the marattialean ferns". Cladistics. 36. doi:10.1111/cla.12419.
Christenhusz, Maarten J. M. (2010). "Revision of the Neotropical fern genus Eupodium (Marattiaceae)". Kew Bulletin. 65: 1–7. doi:10.1007/s12225-010-9178-3.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[Murdock_2008a-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.

[Murdock_2008b-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. doi:10.1002/tax.573007.

[Rothwell_et_al._2018-3] Rothwell, Gar W. (2018). "Resolving the overall pattern of marattialean fern phylogeny". American Journal of Botany. 105: 1304–1314. doi:10.1002/ajb2.1115. PMID 30001474.

[Lehtonen_et_al._2020-4] Lehtonen, Samuli; Poczai, Péter; Sablok, Gaurav; Hyvönen, Jaakko; Karger, Dirk N.; Flores, Jorge (2020). "Exploring the phylogeny of the marattialean ferns". Cladistics. 36. doi:10.1111/cla.12419.

[Christenhusz_2010-5] Christenhusz, Maarten J. M. (2010). "Revision of the Neotropical fern genus Eupodium (Marattiaceae)". Kew Bulletin. 65: 1–7. doi:10.1007/s12225-010-9178-3.