Isodon macrocalyx(Dunn) Kudô

WFO wfo-0000217908 Accepted WFO 2026-06 5 photographs CC BY

Plate 1 figs. a–e · 2 observations

This species has been photographed under an open licence only 2 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Isodon macrocalyx, photographed by Jacy Chen
fig. a Jacy Chen, CC BY 4.0 / 2021-09-27 / obs. 165266658
Isodon macrocalyx, photographed by Jacy Chen
fig. b Jacy Chen, CC BY 4.0 / obs. 165293467
Isodon macrocalyx, photographed by Jacy Chen
fig. c Jacy Chen, CC BY 4.0 / obs. 165266669
Isodon macrocalyx, photographed by Jacy Chen
fig. d Jacy Chen, CC BY 4.0 / obs. 165266642
Isodon macrocalyx, photographed by Jacy Chen
fig. e Jacy Chen, CC BY 4.0 / obs. 165266688

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 2 botanical countries

Regions where Isodon macrocalyx is native: China Southeast, Taiwan China SoutheastTaiwan
Native distribution of Isodon macrocalyx, 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.
RegionTDWG codeContinent
China Southeast CHS ASIA-TEMPERATE
Taiwan TAI

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.

Also published as 9 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.

  • Amethystanthus taiwanensis Masam.
  • Isodon bifidocalyx (Dunn) H.Hara
  • Isodon taiwanensis (Masam.) S.S.Ying
  • Plectranthus bifidocalyx Dunn
  • Plectranthus drosocarpus Hand.-Mazz.
  • Plectranthus macrocalyx Dunn
  • Rabdosia bifidocalyx (Dunn) H.Hara
  • Rabdosia macrocalyx (Dunn) H.Hara
  • Rabdosia taiwanensis (Masam.) H.Hara

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.
  3. 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.