Vernonanthura nudiflora

Plate 1 figs. a–h · 8 separate observations

Vernonanthura nudiflora, photographed by Hugo Hulsberg — fig. b Hugo Hulsberg, CC0 1.0 / obs. 156545767

Vernonanthura nudiflora, photographed by Gabriel Perazza — fig. d Gabriel Perazza, CC BY 4.0 / obs. 197613591

Vernonanthura nudiflora, photographed by Solana González Novoa — fig. e Solana González Novoa, CC BY-SA 4.0 / obs. 197620236

Vernonanthura nudiflora, photographed by Facundo Chieffo — fig. f Facundo Chieffo, CC BY 4.0 / obs. 173664151

Vernonanthura nudiflora, photographed by Edson Luis Fabro Gasperin — fig. g Edson Luis Fabro Gasperin, CC BY-SA 4.0 / obs. 65836873

Vernonanthura nudiflora, photographed by aacocucci — fig. h aacocucci, CC BY 4.0 / obs. 59630051

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 Vernonanthura nudiflora, 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
Argentina Northeast	AGE	SOUTHERN AMERICA
Argentina Northwest	AGW
Argentina South	AGS
Brazil South	BZS
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 286 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	2.7 °C	5.1 °C	10.3 °C
Warmest month, mean daily high	24.3 °C	27.0 °C	31.2 °C
Annual rainfall	869 mm	1,208 mm	1,621 mm
Rainfall in the driest quarter	30 mm	43 mm	362 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 286 research-grade observations of Vernonanthura nudiflora 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.

Cacalia nudiflora (Less.) Kuntze
Vernonanthura nudiflora f. nudiflora
Vernonia angustifolia D.Don ex Hook. & Arn.
Vernonia nudiflora Less.
Vernonia nudiflora f. albiflora Matzenb.
Vernonia nudiflora var. nudiflora
Vernonia salicifolia Griseb.

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.
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.