{{Short description|Species of flowering plant}} {{more citations needed|date=December 2023}} {{Speciesbox |taxon = Packera subnuda |image = Buek's groundsel imported from iNaturalist photo 302020194 on 21 August 2024.jpg |authority = (DC.) Trock & T.M.Barkley |synonyms = *''Packera buekii'' *''Senecio cymbalarioides'' }}
'''''Packera subnuda''''' is a species of flowering plant in the aster family known by the common names '''Buek's groundsel''' and '''cleftleaf groundsel'''. It is native to western North America from the Northwest Territories to northern California to Wyoming, where it grows in high mountain meadows in subalpine and alpine climates.<ref>{{Cite web |last=Giblin |first=David |title=Packera subnuda var. subnuda |url=https://burkeherbarium.org/imagecollection/taxon.php?Taxon=Packera%20subnuda%20var.%20subnuda |access-date=2023-12-31 |website=Burke Herbarium Image Collection}}</ref><ref>{{Cite web |title=Packera subnuda (DC.) D.K. Trock & T.M. Barkley |url=https://plants.usda.gov/home/plantProfile?symbol=PASU40 |access-date=2023-12-31 |website=USDA Plants Database}}</ref>
It is a perennial herb producing one upright stem or a small cluster of two or three stems from a rhizome and/or fibrous root system.<ref>{{Cite web |last=Knoke |first=Don |last2=Giblin |first2=David |title=Packera subnuda |url=https://burkeherbarium.org/imagecollection/taxon.php?Taxon=Packera%20subnuda |access-date=2023-12-31 |website=Burke Herbarium Image Collection}}</ref> The stems grow approximately {{Convert|5 to 30|cm|in|sp=us}} tall.<ref name=":0">{{Cite web |title=Packera subnuda var. subnuda |url=https://oregonflora.org/taxa/index.php?taxon=13978 |access-date=2023-12-31 |website=OregonFlora}}</ref> The basal leaves have fleshy oval blades up to {{Convert|3 or 4|cm|in|sp=us}} long borne on petioles, with leaves higher up the stem smaller and simpler.
The inflorescence is a single flower head, or occasionally two to five heads.<ref name=":0" /> Each is lined with reddish or green phyllaries with green or bluish tips. The head contains many golden yellow disc florets and usually 13 yellow ray florets, each roughly {{Convert|1|cm|in|sp=us}} long.<ref name=":0" />
== References == {{Reflist}}
==External links== *[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,1784,1796 Jepson Manual Treatment] *[https://plants.usda.gov/java/profile?symbol=PASU40 USDA Plants Profile] *[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067271 Flora of North America] *[http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Packera&Species=subnuda Washington Burke Museum] *[http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Packera+subnuda Photo gallery]
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subnuda Category:Flora of Western Canada Category:Flora of the Western United States Category:Flora of California Category:Flora of the Sierra Nevada (United States) Category:Flora of the Rocky Mountains Category:Flora without expected TNC conservation status
{{Senecioneae-stub}}