Ligularia dentata (summer ragwort)

Plate 1 figs. a–h · 8 separate observations

Ligularia dentata, photographed by Maureen Howard — fig. a Maureen Howard, CC BY 4.0 / 2022-02-05 / obs. 178270717

Ligularia dentata, photographed by Barbara Terhal — fig. b Barbara Terhal, CC0 1.0 / obs. 150462903

Ligularia dentata, photographed by Junichi　Mandai — fig. c Junichi　Mandai, CC BY 4.0 / obs. 150626735

Ligularia dentata, photographed by Marco Mussita — fig. d Marco Mussita, CC BY 4.0 / obs. 91784440

Ligularia dentata, photographed by harum.koh — fig. g harum.koh, CC BY-SA 4.0 / obs. 4484308

Ligularia dentata, photographed by Andreas Taeger — fig. h Andreas Taeger, CC BY 4.0 / obs. 189022121

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.

Native range 5 botanical countries

Native distribution of Ligularia dentata, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
China North-Central	CHN	ASIA-TEMPERATE
China South-Central	CHC
China Southeast	CHS
Japan	JAP
Myanmar	MYA	ASIA-TROPICAL

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 119 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-19.3 °C	-8.2 °C	2.8 °C
Warmest month, mean daily high	16.0 °C	22.5 °C	27.8 °C
Annual rainfall	656 mm	1,295 mm	2,895 mm
Rainfall in the driest quarter	99 mm	178 mm	443 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 119 research-grade observations of Ligularia dentata that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 7 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.

Erythrochaete dentata A.Gray
Ligularia clivorum Maxim.
Ligularia japonica var. clivorum (Maxim.) Makino
Senecillis dentata (A.Gray) Kitam.
Senecio clivorum Maxim.
Senecio japonicus var. integrifolius Matsum.
Senecio labordei Vaniot

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

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