View source for Packera glabella

{{Treatment/ID
|accepted_name=Packera glabella
|accepted_authority=(Poiret) C. Jeffrey
|publications={{Treatment/Publication
|title=Kew Bull.
|place=47: 101. 1992
|year=1992
}}
|common_names=Butterweed
|basionyms={{Treatment/ID/Basionym
|name=Senecio glabellus
|authority=Poiret
|rank=species
|publication_title=in J. Lamarck et al., Encycl.
|publication_place=7: 102. 1806
}} {{Treatment/ID/Basionym
|name=Senecio lyratus
|authority=Michaux
|rank=species
|publication_title=
|publication_place=1803
}}
|synonyms={{Treatment/ID/Synonym
|name=Senecio carolinianus
|authority=Sprengel
|rank=species
}} {{Treatment/ID/Synonym
|name=Senecio densiflorus
|authority=M. Martens
|rank=species
}} {{Treatment/ID/Synonym
|name=Senecio lobatus
|authority=Persoon
|rank=species
}} {{Treatment/ID/Synonym
|name=Senecio mississipianus
|authority=de Candolle
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera glabella
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Packera]]</div><div class="higher-taxon"><small>species</small>[[Packera glabella]]</div></div>
|volume=Volume 20
|mention_page=page 548, 575, 601
|treatment_page=page 588
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or biennials, 20–70+ cm; fibrous-rooted (caudices relatively short, weak). <b>Stems</b> 1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose. <b>Basal</b> 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. <b>Cauline</b> leaves gradually reduced (weakly clasping, similar to basal). <b>Heads</b> 8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays). <b>Peduncles</b> bracteate, glabrous or bases tomentose. <b>Calyculi</b> conspicuous (bractlets 2.5–4 mm). <b>Phyllaries</b> (13–)21, green, 5–7 mm, glabrous. <b>Ray</b> florets (8–)13; corolla laminae 7–9 mm. <b>Disc</b> florets 35–50+; corolla tubes 2.5–3.5 mm, limbs 2–3 mm. <b>Cypselae</b> 1–1.5 mm, sparsely hirtellous on ribs or glabrous; pappi 3–4 mm. <b>2n</b> = 46.</span><!--

-->{{Treatment/Body
|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=<p><i>Packera glabella</i> is common and almost weedy in wet, partially shaded places. The hollow, striated stems of <i>P. glabella</i> are distinctive.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Packera glabella
|authority=(Poiret) C. Jeffrey
|rank=species
|parent rank=genus
|synonyms=Senecio carolinianus;Senecio densiflorus;Senecio lobatus;Senecio mississipianus
|basionyms=Senecio glabellus;Senecio lyratus
|family=Asteraceae
|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.
|reference=None
|publication title=Kew Bull.
|publication year=1992
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V20_1311.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Packera
|species=Packera glabella
}}<!--

-->[[Category:Treatment]][[Category:Packera]]