Oenothera acaulisCav.

WFO wfo-0001087705 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Oenothera acaulis, photographed by Cesar Ormazabal
fig. a Cesar Ormazabal, CC BY 4.0 / 2021-11-26 / obs. 172684481
Oenothera acaulis, photographed by Cesar Ormazabal
fig. b Cesar Ormazabal, CC BY 4.0 / obs. 172684473
Oenothera acaulis, photographed by Cesar Ormazabal
fig. c Cesar Ormazabal, CC BY 4.0 / obs. 165675537
Oenothera acaulis, photographed by Cesar Ormazabal
fig. d Cesar Ormazabal, CC BY 4.0 / obs. 165675566
Oenothera acaulis, photographed by Cesar Ormazabal
fig. e Cesar Ormazabal, CC BY 4.0 / obs. 165675602
Oenothera acaulis, photographed by Orlando Fuenzalida
fig. f Orlando Fuenzalida, CC BY 4.0 / obs. 165708979
Oenothera acaulis, photographed by Nicolás Villaseca Merino
fig. g Nicolás Villaseca Merino, CC BY-SA 4.0 / obs. 147157903
Oenothera acaulis, photographed by Jorge Herreros de Lartundo
fig. h Jorge Herreros de Lartundo, CC BY 4.0 / obs. 188914346

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 Oenothera acaulis is native: Chile Central, Chile South Chile CentralChile South
Native distribution of Oenothera acaulis, 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
Chile Central CLC SOUTHERN AMERICA
Chile South CLS

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.

Flowering 302 in flower of 305 examined

Peak flowering in Jan. Each bar is the share of Oenothera acaulis observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 302 of 305 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 4 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

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.

  • Lavauxia cuspidata Spach
  • Lavauxia mutica Spach
  • Oenothera acaulis var. caulescens C.Presl
  • Oenothera acaulis var. grandiflora (Ruiz & Pav.) Kuntze
  • Oenothera acaulis var. major Ser.
  • Oenothera anisoloba Sweet
  • Oenothera grandiflora Ruiz & Pav.
  • Oenothera perampla Graham
  • Oenothera taraxacifolia hort. ex Sweet

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.