Packera glabella (Poiret) C. Jeffrey. Common name: Butterweed, Smooth Ragwort, Smooth Groundsel, Yellowtop. Phenology: Mar-early Jun. Habitat: Swamp forests, bottomland forests, cleared areas in bottomlands, wet agricultural fields, ditches, often in mucky soils. Distribution: E. NC south to s. FL, west to e. TX, north in the interior to sw. WV, OH, MO, and SD.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, Fl7, FNA20, Il, K4, Mi, Pa, Tn, WH3, Barkley (1999); = Senecio glabellus Poir. — C, F, G, GrPl, GW2, Oh3, RAB, S, SE1, WV, Barkley (1978); = Senecio lobatus Pers. Basionym: Senecio glabellus Poir. 1806
Links to other floras: = Packera glabella - FNA20
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL
- Eastern Mountains and Piedmont: OBL
- Great Plains: FACW
- Midwest: FACW
- Northcentral & Northeast: FACW
Heliophily ⓘ: 5
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© Brady Beck | Original Image ⭷
© Alan Cressler: Packera glabella, Lime Creek floodplain, Sumter County, Georgia 1 by Alan Cressler source | Original Image ⭷
© Scott Ward
© Keith Bradley | Original Image ⭷
© Will Stuart | Original Image ⭷
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Scott Ward
© Scott Ward
© Scott Ward
© Scott Ward
© Scott Ward | Original Image ⭷
© Scott Ward | Original Image ⭷Feedback
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Horticultural Information
Intro: Erect annual/biennial of swamp forests, bottomland forests and cleared areas in bottomlands, often in mucky soils.
Stems: Stems stout, hollow, branched in inflorescence, light green to reddish-green.
Leaves: Leaves alternate; petiolate; elliptic to oblong-lance-shaped; 2-8 in. long (reduced and sessile upward); deeply lobed, with the lobes nearly opposite (pinnate), irregular in shape and toothed.
Inforescence:
Flowers: Composite flowers (heads) in branched terminal clusters and smaller clusters from leaf axils; heads about 1/2 in. wide, consisting of 5-15 yellow ray florets encircling a center disk of tiny, golden yellow, tubular florets.
Fruits: Fruit a small, tufted achene.
Comments:
Height: 1-3 ft.
plant sale text:
bloom table text:
description: Erect annual/biennial of swamp forests, bottomland forests and cleared areas in bottomlands, often in mucky soils.
stems: Stems stout, hollow, branched in inflorescence, light green to reddish-green.
leaves: Leaves alternate; petiolate; elliptic to oblong-lance-shaped; 2-8 in. long (reduced and sessile upward); deeply lobed, with the lobes nearly opposite (pinnate), irregular in shape and toothed.
inflorescence:
flowers: Composite flowers (heads) in branched terminal clusters and smaller clusters from leaf axils; heads about 1/2 in. wide, consisting of 5-15 yellow ray florets encircling a center disk of tiny, golden yellow, tubular florets.
fruits: Fruit a small, tufted achene.
comments:
cultural notes:
germination code:
native range:
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