Echinolaena inflexa

Plate 1 figs. a–c · 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.

Echinolaena inflexa, photographed by Márcia Martins — fig. a Márcia Martins, CC BY 4.0 / 2021-12-20 / obs. 173120283

Echinolaena inflexa, photographed by Leonardo Bergamini — fig. c Leonardo Bergamini, CC BY 4.0 / obs. 112357237

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 9 botanical countries

Native distribution of Echinolaena inflexa, 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
Bolivia	BOL	SOUTHERN AMERICA
Brazil Northeast	BZE
Brazil Southeast	BZL
Brazil West-Central	BZC
Colombia	CLM
French Guiana	FRG
Guyana	GUY
Suriname	SUR
Venezuela	VEN

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 168 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	11.5 °C	22.4 °C	23.9 °C
Warmest month, mean daily high	26.3 °C	29.9 °C	31.6 °C
Annual rainfall	1,352 mm	2,814 mm	3,369 mm
Rainfall in the driest quarter	23 mm	220 mm	275 mm

It is not found anywhere that gets close to freezing. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 168 research-grade observations of Echinolaena inflexa 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 15 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.

Cenchrus inflexus Poir.
Cenchrus marginalis Rudge
Echinolaena hirta Desv.
Echinolaena scabra Kunth
Echinolaena scabra var. ciliata A.St.-Hil.
Panicum echinolaena Nees
Panicum echinolaena var. ciliatum Nees
Panicum echinolaena var. glabrum Nees ex Döll
Panicum echinolaena var. pilosum Döll
Panicum echinolaena var. tomentellum Döll
Panicum echinolaena var. velutinum Döll
Panicum echinolaena var. villosum Nees
Panicum jacobinae Steud.
Panicum marginale (Rudge) Hack.
Pseudechinolaena inflexa (Poir.) Pittier

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.