Physematium scopulinum
{{Short description|Species of fern}}
{{Speciesbox
| image = Woodsia scopulina.jpg
| status = {{TNCStatus}}
| status_system = TNC
| status_ref = {{cite NatureServe |id=2.807064 |title=Woodsia scopulina |date=November 1, 2024 |access-date=November 17, 2024}}
| genus = Physematium
| species = scopulinum
| authority = Trevis.
|synonyms_ref = {{Cite WF |taxon=Physematium scopulinum |access-date=13 June 2023}}
|synonyms = {{Species list
| Woodsia obtusa f. nana | (Lemmon ex Gilbert) Clute
| Woodsia obtusa var. lyallii | Hook.
| Woodsia obtusa var. nana | Lemmon ex Gilbert
| Woodsia oregana var. lyallii | (Hook.) B.Boivin
| Woodsia scopulina | D.C.Eaton
| Woodsia scopulina f. nana | (Lemmon) M.Broun
| Woodsiopsis scopulina | (D.C.Eaton) Shmakov
}}
}}
Physematium scopulinum, also called Woodsia scopulina, is a deciduous perennial fern in the family Woodsiaceae, with the common name Rocky Mountain woodsia.
This plant is native to the western and northern United States and Canada. W. scopulina is a small to medium sized fern, 10-30 centimeters high, which grows in mesic to dry rock crevices.Dale H. Witt, Janet E. Marsh, and Robin B. Bovey, Mosses Lichens and Ferns of Northwest North America (Edmonton: Lone Pine, 1988), p. 273[https://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Woodsia%20scopulina Burke Herbarium Image Collection, Chaenactis thompsonii]
Description
Physematium scopulinum has twice pinnate fronds arising from a short scaly rhizome. The mostly upright fronds are 10–30 cm in length and up to 8 cm in width and are medium to pale green in color. The pinnae and rachis are sparsely to moderately covered with long hairs that protrude sharply (not appressed to stem), some with a globular gland at the tip. The hairy rachis distinguishes it from the similar species Physematium oreganum. The rachis is grooved on top (adaxially). Small round sori on the underside of pinnae are initially partly covered with a narrowly lobed indusium. New leaves show circinate vernation (tightly curled).{{cite book |last1=Hitchcock |first1=C. Leo |author-link1=Charles Leo Hitchcock |last2=Cronquist |first2=Arthur |author-link2=Arthur Cronquist |editor-last1=Giblin |editor-first1=David |editor-last2=Legler |editor-first2= Ben |editor-last3=Zika |editor-first3=Peter F. |editor-last4=Olmstead |editor-first4=Richard G. |date=2018 |title=Flora of the Pacific Northwest |language=en |url=https://muse.jhu.edu/pub/194/monograph/book/81742 |url-access=subscription |edition=Second |location=Seattle, Washington |publisher=University of Washington Press |page=60 |isbn=9780295742885 |oclc=1027726040}}
Range
Habitat
Gallery
Image:Woodsia scopulina JHT1.jpg|Leafing out in spring
Image:Woodsia scopulina JHT2.jpg|Growing among talus rock
Image:Woodsia scopulina JHT iNat-222453096.jpg|Underside of leaf
References
{{Reflist}}
External links
{{commons category}}
- [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?19,42,45 Jepson Manual Treatment]
- [http://plants.usda.gov/java/profile?symbol=WOSC USDA Plants Profile]
- [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200004236 Flora of North America]
- [http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Woodsia&Species=scopulina Washington Burke Museum]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Woodsia+scopulina Photo gallery]
{{Taxonbar|from1=Q17259519|from2=Q8033304}}
Category:Ferns of the United States
Category:Flora of the Rocky Mountains
Category:Flora of the Western United States
Category:Flora of the Northern United States
Category:Flora of the Northwestern United States
Category:Flora of Western Canada
{{Polypodiales-stub}}