Packera glabella(Poir.) C.Jeffrey

Butterweed

WFO wfo-0000094239 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Packera glabella, photographed by Violet T.
fig. a Violet T., CC BY 4.0 / 2022-06-06 / obs. 204205257
Packera glabella, photographed by john_hall
fig. b john_hall, CC BY 4.0 / obs. 200396553
Packera glabella, photographed by threelark
fig. c threelark, CC BY 4.0 / obs. 201631601
Packera glabella, photographed by Mike B
fig. d Mike B, CC BY-SA 4.0 / obs. 203333737
Packera glabella, photographed by Mike B
fig. e Mike B, CC BY-SA 4.0 / obs. 201138406
Packera glabella, photographed by Violet T.
fig. f Violet T., CC BY 4.0 / obs. 205308942
Packera glabella, photographed by Mike B
fig. g Mike B, CC BY-SA 4.0 / obs. 201138358
Packera glabella, photographed by Violet T.
fig. h Violet T., CC BY 4.0 / obs. 200809031

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 3,563 observations

Peak flowering in Apr, from 3,563 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Cineraria uncinata Spreng. ex DC.
  • Senecio carolinianus Spreng.
  • Senecio densiflorus M.Martens
  • Senecio lobatus Pers.
  • Senecio lyratus Michx.
  • Senecio mississipianus DC.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.