Croton subpannosusGriseb.

WFO wfo-0000932493 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 5 observations

This species has been photographed under an open licence only 5 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.

Croton subpannosus, photographed by aacocucci
fig. a aacocucci, CC BY 4.0 / 2022-03-26 / obs. 185121846
Croton subpannosus, photographed by aacocucci
fig. b aacocucci, CC BY 4.0 / obs. 33768400
Croton subpannosus, photographed by aacocucci
fig. c aacocucci, CC BY 4.0 / obs. 185121869
Croton subpannosus, photographed by RAP
fig. d RAP, CC BY 4.0 / obs. 87111236
Croton subpannosus, photographed by Tomás Carranza Perales
fig. e Tomás Carranza Perales, CC BY 4.0 / obs. 172575203
Croton subpannosus, photographed by Tomás Carranza Perales
fig. f Tomás Carranza Perales, CC BY 4.0 / obs. 172012985
Croton subpannosus, photographed by Tomás Carranza Perales
fig. g Tomás Carranza Perales, CC BY 4.0 / obs. 172575216
Croton subpannosus, photographed by Tomás Carranza Perales
fig. h Tomás Carranza Perales, CC BY 4.0 / obs. 172012999

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.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
3980517
Filed as
Croton subpannosus Müll.Arg. ex Griseb.
Det. by
not recorded on this sheet
Collected
not recorded
Origin
not recorded
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. We link to the digitised sheet rather than rehosting it, because the holding institutions do not serve their images to third parties reliably and we are not going to show you a picture we cannot actually deliver. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all sheets never recorded a determiner, which is ordinary.

Native range 6 botanical countries

Regions where Croton subpannosus is native: Argentina Northeast, Argentina Northwest, Bolivia, Brazil South, Paraguay, Uruguay Argentina NortheastArgentina NorthwestBoliviaBrazil SouthParaguayUruguay
Native distribution of Croton subpannosus, 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
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Bolivia BOL
Brazil South BZS
Paraguay PAR
Uruguay URU

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 72 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 3.4 °C 5.2 °C 12.0 °C
Warmest month, mean daily high 25.0 °C 28.1 °C 32.0 °C
Annual rainfall 852 mm 1,037 mm 1,742 mm
Rainfall in the driest quarter 29 mm 37 mm 273 mm

It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 72 research-grade observations of Croton subpannosus 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 10 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.

  • Croton dentosus Griseb.
  • Julocroton brittonianum Morong
  • Julocroton serratus Müll.Arg.
  • Julocroton subpannosus Müll.Arg.
  • Julocroton subpannosus var. chacoensis Croizat
  • Julocroton subpannosus var. formosensis Croizat
  • Julocroton subpannosus var. posadensis Croizat
  • Julocroton subpannosus var. typicus Croizat
  • Julocroton subpannosus var. uruguayensis Croizat
  • Oxydectes subpannosa (Griseb.) Kuntze

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.