| 词条 | Packera glabella |
| 释义 |
|name = Packera glabella |image = Packera glabella2.jpg |image_caption = Butterweed |taxon = Packera glabella[1] |authority = (Poir.) C. Jeffrey |synonyms = Senecio glabellus Pior. Senecio lobatus Pers.[2] Senecio carolinianus Spreng. Senecio densiflorus Mart. Senecio lobatus Pers. Senecio lyratus Michx. |}}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] DistributionButterweed 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.
Nearctic: 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 References1. ^{{cite web | url = http://plants.usda.gov/java/profile?symbol=PAGL17 | title = PLANTS Profile, Packera glabella (Poir.) C. Jeffrey | accessdate = 2008-04-22 | author = Natural Resources Conservation Service (NRCS) | authorlink = Natural Resources Conservation Service | work = The PLANTS Database | publisher = United States Department of Agriculture }} 2. ^{{cite web | url = https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=565358 | title = Packera glabella (Poir) C. Jeffrey | accessdate = 2008-04-01 | authorlink = Integrated Taxonomic Information System | author =Integrated Taxonomic Information System Organization (ITIS) | date = 1999 | work = Integrated Taxonomic Information System on-line database}} 3. ^{{cite journal | last =Flora of North America | authorlink =Flora of North America | title = 22. Packera glabella (Poiret) C. Jeffrey, Kew Bull. 47: 101. 1992. | volume =20 | pages =548, 575, 585, 588, 601 | url =http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416908 | accessdate = 2008-04-22 }} 4. ^{{cite web | url = http://plants.usda.gov/java/profile?symbol=PAGL17 | title = Taxon: Packera glabella (Poiret) C. Jeffrey | accessdate = 2008-04-22 | author = Germplasm Resources Information Network (GRIN) | authorlink = Germplasm Resources Information Network | date = 2007-05-03 | work = Taxonomy for Plants | publisher = USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland }} External links
3 : Packera|Flora of the Eastern United States|Flora of the Plains-Midwest (United States) |
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