Gymnocarpium

{{Short description|Genus of ferns}}

{{automatic taxobox

| image = Gymnocarpium dryopteris Moore5.png

| taxon = Gymnocarpium

| authority = Newm. 1851

| type_species = Gymnocarpium dryopteris

| type_species_authority = (von Linné) Newman

| subdivision_ranks = Species

| subdivision = See text

| synonyms =

  • Carpogymnia (Fuchs ex Janch.) Löve & Löve
  • ×Cystocarpium Fraser-Jenkins
  • Currania Copeland

}}

Gymnocarpium is a small genus of ferns, called oak ferns. It was once placed with various other groups, including the dryopteroid ferns and the athyrioid ferns. Cladistic analysis has demonstrated that Gymnocarpium and Cystopteris form a natural but relatively primitive clade that is basal to the asplenioid, thelypterioid, and athyrioid ferns comprehensively.

Gymnocarpium sori are small, round and naked. These ferns generally have a slender, creeping rhizome under the surface of the ground, and fairly thin-textured fronds.

Phylogeny

This genus includes the following species:

class="wikitable"
colspan=1 | Phylogeny from Fern Tree of Life{{cite journal |last1=Nitta |first1=Joel H. |last2=Schuettpelz |first2=Eric |last3=Ramírez-Barahona |first3=Santiago |last4=Iwasaki |first4=Wataru |display-authors=et al. |year=2022 |title=An Open and Continuously Updated Fern Tree of Life |journal=Frontiers in Plant Science |volume=13 |issue= |page= 909768| doi=10.3389/fpls.2022.909768 |pmid= 36092417|pmc= 9449725|bibcode= |doi-access=free}}{{cite web |last1= |first1= |display-authors=et al. |year=2024 |title=Tree viewer: interactive visualization of FTOL |url=https://fernphy.github.io/viewer.html |version=FTOL v1.7.0 (GenBank release 261) |access-date=1 May 2025}}

! colspan=1 | Other species include:

style="vertical-align:top|

{{clade|style=font-size:90%;line-height:80%

|label1=Gymnocarpium

|1={{Clade

|1=G. robertianum (Hoffm.) Newman (Limestone/scented oak fern)

|2={{Clade

|1={{Clade

|1=×Cystocarpium × roskamianum Fraser-Jenkins

|2={{Clade

|1=G. ×brittonianum (Sarvela) Pryer & Haufler

|2={{Clade

|1=G. disjunctum (Ruprecht) Ching (Pacific oak fern)

|2=G. dryopteris (von Linné) Newman (Western/northern oak fern)

}}

}}

}}

|2={{Clade

|1=G. oyamense (Baker) Ching

|2={{Clade

|1={{Clade

|1=G. jessoense (Koidzumi) Koidzumi

|2=G. remotepinnatum (Hayata) Ching

}}

|2={{Clade

|1=G. appalachianum Pryer & Haufler (Appalachian oak fern)

|2=G. continentale (Petrov) Pojark. (Nahanni oak fern)

}}

}}

}}

}}

}}

}}

|

{{div col|colwidth=18em}}

  • G. ×achriosporum Sarvela
  • G. ×bipinnatifidum Miyam.
  • G. fedtschenkoanum
  • G. ×intermedium Sarvela

{{div col end}}

References

{{Reflist}}