Thelypteris

Taxobox
name = "Thelypteris"

---

regnum = Plantae
divisio = Polypodiophyta
classis = Polypodiopsida
ordo = Blechnales
familia = Thelypteridaceae
genus = "Thelypteris"
subdivision_ranks = Species
subdivision = as many as 900; see text

"Thelypteris" is a genus of ferns in the family Thelypteridaceae. If the genus is defined fairly broadly, it contains 875cite web | work = Flora of North America | title = Thelypteris | url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=132776 ] species, many of which are extremely similar to one another, and is found nearly worldwide. The ferns are terrestrial, with the exception of a few which are lithophytes (grow on rocks).A. R. Smith, K. M. Pryer, E. Schuettpelz, P. Korall, H. Schneider, P. G. Wolf. 2006. "A classification for extant ferns". "Taxon" 55(3), 705-731 (pdf [http://www.pryerlab.net/publication/fichier749.pdf here] )] The bulk of the species are tropical, although there are a number of temperate species.

Classification

At one time,specify 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"; others divide the family into as many as 30 genera. An intermediate position is to place the bulk in "Thelypteris" (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 a half a dozen or so genera, one of which is "Thelypteris".

Species

The genus includes the following species (incomplete list):
* "Thelypteris aculeata", A.R.Sm., endemic to Ecuador
* "Thelypteris appressa", A.R.Sm., endemic to Ecuador
* "Thelypteris bonapartii", (Rosenst.) Alston, endemic to Ecuador
* "Thelypteris campii", A.R.Sm., endemic to Ecuador
* "Thelypteris chimboracensis", A.R.Sm., endemic to Ecuador
* "Thelypteris conformis", (Sodiro) A.R.Sm., endemic to Ecuador
* "Thelypteris correllii", A.R.Sm., endemic to Ecuador
* "Thelypteris dodsonii", A.R.Sm., endemic to Ecuador
* "Thelypteris elegantula", (Sodiro) Alston, endemic to Ecuador
* "Thelypteris euthythrix", A.R.Sm., endemic to Ecuador
* "Thelypteris fluminalis", A.R.Sm., endemic to Ecuador
* "Thelypteris macra", A.R.Sm., endemic to Ecuador
* "Thelypteris noveboracensis", New York fern, eastern North America [cite web | work = Flora of North America | title = Thelypteris noveboracensis | url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501287 ]
* "Thelypteris palustris", Marsh fern, eastern North America
* "Thelypteris rosenstockii", (C.Chr.) R.M.Tryon, endemic to Ecuador
* "Thelypteris semilunata", (Sodiro) A.R.Sm., endemic to Ecuador
* "Thelypteris subtilis", A.R.Sm., endemic to Ecuador

References