Packera glabella

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Packera glabella
Packera glabella2.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Senecioneae
Genus: Packera
Species: P. glabella
Binomial name
Packera glabella[1]
(Poir.) C. Jeffrey

Senecio glabellus Pior.
Senecio lobatus Pers.[2]
Senecio carolinianus Spreng.
Senecio densiflorus Mart.
Senecio lobatus Pers.
Senecio lyratus Michx.
Senecio mississipianus DC.[3]

Packera glabella (formerly Senecio glabellus) is one of several plants with the common name butterweed, this one has also been called cressleaf groundsel and yellowtop. It is native to central and southeastern North America.[4]


Butterweed is found from Texas north to South Dakota and east to Ohio with a disjunct population in Delaware. It grows in clay and loam soils in disturbed areas and in prairie and floodplain habitats.

Northeastern U.S.A.: Indiana
North-Central U.S.A.: Illinois, Kansas, Missouri, Nebraska, Oklahoma
Southeastern U.S.A.: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina
South-Central U.S.A.: Texas


  1. ^ Natural Resources Conservation Service (NRCS). "PLANTS Profile, Packera glabella (Poir.) C. Jeffrey". The PLANTS Database. United States Department of Agriculture,. Retrieved 2008-04-22. 
  2. ^ Integrated Taxonomic Information System Organization (ITIS) (1999). "Packera glabella (Poir) C. Jeffrey". Integrated Taxonomic Information System on-line database. Retrieved 2008-04-01. 
  3. ^ Flora of North America. "22. Packera glabella (Poiret) C. Jeffrey, Kew Bull. 47: 101. 1992.". 20: 548, 575, 585, 588, 601. Retrieved 2008-04-22. 
  4. ^ Germplasm Resources Information Network (GRIN) (2007-05-03). "Taxon: Packera glabella (Poiret) C. Jeffrey". Taxonomy for Plants. USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 2008-04-22. 

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