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thelypteris

{{Short description|Genus of polypod ferns}}

{{Automatic taxobox

| image = Thelypteris palustris 02.jpg

| image_caption = Thelypteris palustris

| taxon = Thelypteris

| authority = Schmidel

| type_species = Thelypteris palustris

| type_species_authority = Schott

| subdivision_ranks = Species

| subdivision = See text.

| synonyms =

{{Genus list

|Asterochlaena|C.Chr.

}}

| synonyms_ref =

}}

Thelypteris (maiden ferns{{PLANTS|id=THELY2|taxon=Thelypteris|accessdate=9 December 2015}}) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use {{As of|2020|January|lc=yes}}. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus is a very small one with about two species. In other approaches, the genus is the only one in the subfamily Thelypteridoideae, and so includes between 875{{cite web | work = Flora of North America | title = Thelypteris | url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=132776 }} and 1083 species.{{cite web |title=Thelypteris Schmidel |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew|url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:331118-2 |access-date=2020-01-11 }}

The genus name is from Greek thēlys "female" and pteris "fern". However, "female fern" usually refers to the common lady-fern.

Taxonomy

At one time,{{specify|date=March 2017}} all thelypterioid ferns were included in the genus Dryopteris because of the sorus shape. However, there are a great many differences between the groups, and these plants are now segregated in their own family.

Some researchers include the entire family Thelypteridaceae in the genus Thelypteris.{{citation needed|date=January 2020}} An intermediate position is to place the bulk in Thelypteris (corresponding to Thelypterioideae of PPG I), which can then be divided into subgenera and sections corresponding to the genera of other authors, but to separate out Phegopteris and Macrothelypteris. Another choice is to divide the family into many genera, one of which is Thelypteris. This is the approach taken in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).

= Species =

Using the circumscription of the genus in PPG I, {{As of|2023|May|lc=yes}}, the Checklist of Ferns and Lycophytes of the World accepted three species:

Other sources place the entire subfamily Thelypteridoideae in the genus, and so accept many more species, including the following (synonyms from the Checklist of Ferns and Lycophytes of the World):

References

{{Reflist|refs=

{{Citation |mode=cs1 |last1=Hassler |first1=Michael |last2=Schmitt |first2=Bernd |date=May 2023 |contribution=Thelypteris |title=Checklist of Ferns and Lycophytes of the World |at=15.3 |url=https://www.worldplants.de/world-ferns/ferns-and-lycophytes-list |access-date=2023-05-15 |name-list-style=amp }}

{{citation |mode=cs1 |author=PPG I |year=2016 |title=A community-derived classification for extant lycophytes and ferns |journal=Journal of Systematics and Evolution |volume=54 |issue=6 |pages=563–603 |doi=10.1111/jse.12229|s2cid=39980610 |doi-access=free }}

{{cite journal |first1=Alan R. |last1=Smith |first2=Kathleen M. |last2=Pryer |first3=Eric |last3=Schuettpelz |first4=Petra |last4=Korall |first5=Harald |last5=Schneider |first6=Paul G. |last6=Wolf |date=August 2006 |title=A Classification for Extant Ferns |journal=Taxon |volume=55 |issue=3 |pages=705–31 |doi=10.2307/25065646 |jstor=25065646}}

{{cite journal

|first1=Maarten J. M. |last1=Christenhusz |first2=Xian-Chun |last2=Zhang |first3=Harald |last3=Schneider

|year=2011

|title=A linear sequence of extant families and genera of lycophytes and ferns

|journal=Phytotaxa|volume=19|pages=7–54

|doi=10.11646/phytotaxa.19.1.2 |url=http://www.mapress.com/phytotaxa/content/2011/f/pt00019p054.pdf}}

}}

{{Taxonbar|from=Q2698270}}

{{Authority control}}

Category:Thelypteridaceae

Category:Fern genera

Category:Taxonomy articles created by Polbot