Difference between revisions of "Packera glabella"
Kew Bull. 47: 101. 1992.
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|common_names=Butterweed | |common_names=Butterweed | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=F | ||
| + | |label=Illustrated | ||
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| + | |code=E | ||
| + | |label=Endemic | ||
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| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Senecio glabellus | |name=Senecio glabellus | ||
|authority=Poiret | |authority=Poiret | ||
| − | }} {{Treatment/ID/ | + | |rank=species |
| + | |publication_title=in J. Lamarck et al., Encycl. | ||
| + | |publication_place=7: 102. 1806 | ||
| + | }} {{Treatment/ID/Basionym | ||
|name=Senecio lyratus | |name=Senecio lyratus | ||
|authority=Michaux | |authority=Michaux | ||
| + | |rank=species | ||
| + | |publication_title= | ||
| + | |publication_place=1803 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Senecio carolinianus | |name=Senecio carolinianus | ||
|authority=Sprengel | |authority=Sprengel | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio densiflorus | |name=Senecio densiflorus | ||
|authority=M. Martens | |authority=M. Martens | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio lobatus | |name=Senecio lobatus | ||
|authority=Persoon | |authority=Persoon | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio mississipianus | |name=Senecio mississipianus | ||
|authority=de Candolle | |authority=de Candolle | ||
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}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera glabella | |hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera glabella | ||
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name=Packera glabella | name=Packera glabella | ||
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|authority=(Poiret) C. Jeffrey | |authority=(Poiret) C. Jeffrey | ||
|rank=species | |rank=species | ||
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|publication title=Kew Bull. | |publication title=Kew Bull. | ||
|publication year=1992 | |publication year=1992 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1311.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Packera | |genus=Packera | ||
Latest revision as of 20:00, 5 November 2020
Annuals or biennials, 20–70+ cm; fibrous-rooted (caudices relatively short, weak). Stems 1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose. Basal leaves (and proximal cauline) obscurely petiolate; blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate. Cauline leaves gradually reduced (weakly clasping, similar to basal). Heads 8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays). Peduncles bracteate, glabrous or bases tomentose. Calyculi conspicuous (bractlets 2.5–4 mm). Phyllaries (13–)21, green, 5–7 mm, glabrous. Ray florets (8–)13; corolla laminae 7–9 mm. Disc florets 35–50+; corolla tubes 2.5–3.5 mm, limbs 2–3 mm. Cypselae 1–1.5 mm, sparsely hirtellous on ribs or glabrous; pappi 3–4 mm. 2n = 46.
Phenology: Flowering (Feb–)mid Mar–late May.
Habitat: Open wet areas, edges of woodlands, stream banks, roadsides, meadows, marshes, fallow fields
Elevation: 0–600 m
Distribution
Ala., Ark., Fla., Ga., Ill., Ind., Kans., Ky., La., Miss., Mo., Nebr., N.C., Ohio, Okla., S.C., Tenn., Tex.
Discussion
Packera glabella is common and almost weedy in wet, partially shaded places. The hollow, striated stems of P. glabella are distinctive.
Selected References
None.