Chaenactis douglasii
{{Short description|Species of flowering plant}}
{{Speciesbox
|image = Chaenactis douglasii 9891.JPG
|status = {{TNCStatus}}
|status_system = TNC
|genus = Chaenactis
|species = douglasii
|authority = (Hook.) Hook. & Arn.
|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-142027 The Plant List, Chaenactis douglasii (Hook.) Hook. & Arn. ]
|synonyms =
{{collapsible list|bullets = true
|title=Synonymy
|Chaenactis achilleifolia Hook. & Arn.
|Chaenactis angustifolia Greene
|Chaenactis brachiata Greene
|Chaenactis cheilanthoides Greene
|Chaenactis cinerea Stockw.
|Chaenactis humilis Rydb.for po*n vids send a message on dhruv0.x.0sharma
|Chaenactis pedicularia Greene
|Chaenactis pumila Greene
|Chaenactis ramosa Stockw.
|Chaenactis rubricaulis Rydb.
|Chaenactis suksdorfii Stockw.
|Hymenopappus douglasii Hook.
|Macrocarphus achilleifolius (Hook. & Arn.) Nutt.
|Macrocarphus douglasii (Hook.) Nutt.
|}}}}
Chaenactis douglasii is a North American species of flowering plant in the daisy family known by the common name Douglas' dustymaiden.
Description
Chaenactis douglasii is a variable herb, generally a perennial. It grows erect to {{Convert|10|-|60|cm|0|abbr=off}}, with one to many stems coated in cobwebby hairs. The woolly or hairy leaves may be up to {{Convert|15|cm|0|abbr=on}} long and are divided intricately into many lobes with curled or twisted tips. Stem leaves become smaller and stalkless upwards.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066309 Flora of North America, Hoary pincushion, Douglas’s dustymaiden, Chaenactis douglasii (Hooker) Hooker & Arnott, Bot. Beechey Voy. 354. 1839. ]{{cite web | url= http://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Chaenactis%20douglasii | editor-last= Klinkenberg | editor-first= Brian | date= 2020 | title= Chaenactis douglasii | website= E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. | publisher= Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver | accessdate= 2020-09-22}}{{cite web | url= http://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Chaenactis%20douglasii | editor-last= Giblin | editor-first= David | date= 2020 | title= Chaenactis douglasii | website= WTU Herbarium Image Collection | publisher= Burke Museum, University of Washington | accessdate= 2020-09-22}}{{cite web | url= http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=Chaenactis%20douglasii | date= 2020 | title= Chaenactis douglasii | website= in Jepson Flora Project (eds.) Jepson eFlora | publisher= Jepson Herbarium; University of California, Berkeley | accessdate= 2020-09-22}}
The inflorescence produces one or more flower heads, each up to about {{Convert|2|cm|1|abbr=on|frac=8}} long. The discoid flower head is lined with flat, glandular, blunt-pointed phyllaries and contains 50–70 white or pinkish tubular disc flowers with protruding anthers.{{Cite book|last=Taylor|first=Ronald J.|url=https://www.worldcat.org/oclc/25708726|title=Sagebrush Country: A Wildflower Sanctuary|publisher=Mountain Press Pub. Co|year=1994|isbn=0-87842-280-3|edition=rev.|location=Missoula, MT|pages=160|language=en|oclc=25708726|orig-year=1992}}
The fruit is an achene about {{Convert|1|cm|1|abbr=on|frac=8}} long including its pappus of scales.
{{gallery|mode=packed
|Chaenactisdouglasii1.JPG|A flower head
}}
;Varieties
- Chaenactis douglasii var. alpina A.Gray
- Chaenactis douglasii var. douglasii
Distribution and habitat
The plant is found in western Canada and the western United States from British Columbia to Saskatchewan, and south to California to New Mexico, with a few isolated populations in Nebraska and the Dakotas.[http://bonap.net/MapGallery/County/Chaenactis%20douglasii.png Biota of North America Program 2014 county distribution map] It grows in a wide variety of habitats, including harsh environments such as rock fields in alpine climates in the Sierra Nevada, east of the crest of the Cascade Range of Washington and Oregon, scrubland and desert, and disturbed areas such as roadsides. Distributed over a wide range of elevations, from sea level to {{Convert|13000|ft|abbr=off|order=flip}}, it is found most often between {{Convert|6000|-|8000|ft|abbr=on|order=flip}}.[http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=1894 Calflora taxon report, University of California, Chaenactis douglasii (Hook.) Hook. & Arn., Chaenactis, Douglas' dustymaiden, hoary chaenactis ]{{cite web |last=Sullivan |first=Steven. K. |date=2020 |title=Chaenactis douglasii |url=http://www.wildflowersearch.com/search?&PlantName=Chaenactis+douglasii |website=Wildflower Search |accessdate=2020-09-22}}{{cite web |author=USDA, NRCS. |date=2020 |title=Chaenactis douglasii |url=https://plants.usda.gov/java/profile?symbol=CHDO |website=The PLANTS Database |publisher=National Plant Data Team, Greensboro, NC 27401-4901 USA. |access-date=2020-09-22}}
Uses
References
{{Reflist}}
External links
- {{Commons-inline}}
- [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,890,896 Jepson Manual Treatment of Chaenactis douglasii]
- [https://plants.usda.gov/java/profile?symbol=CHDO United States Department of Agriculture Plants Profile for Chaenactis douglasii]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Chaenactis+douglasii Chaenactis douglasii — Calphotos Photo gallery, University of California]
{{Taxonbar|from=Q5066558}}
Category:Plants described in 1833
Category:Flora of the Western United States
Category:Flora of Western Canada
Category:Natural history of the California Coast Ranges
Category:Natural history of the Mojave Desert
Category:Plants used in traditional Native American medicine