Vancouveria hexandraC.Morren & Decne.

White inside-out-flowerwhite inside-out-flowerwhite insideout flower

WFO wfo-0001146472 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Vancouveria hexandra, photographed by S. Kellington
fig. a S. Kellington, CC BY 4.0 / 2022-06-01 / obs. 202551098
Vancouveria hexandra, photographed by Hilary Rose Dawson
fig. b Hilary Rose Dawson, CC BY 4.0 / obs. 187434748
Vancouveria hexandra, photographed by Sean Haight
fig. c Sean Haight, CC0 1.0 / obs. 181717362
Vancouveria hexandra, photographed by Gavin Slater
fig. d Gavin Slater, CC BY 4.0 / obs. 181108807
Vancouveria hexandra, photographed by Sean Haight
fig. e Sean Haight, CC0 1.0 / obs. 180235299
Vancouveria hexandra, photographed by Sean Haight
fig. f Sean Haight, CC0 1.0 / obs. 175512618
Vancouveria hexandra, photographed by Sean Haight
fig. g Sean Haight, CC0 1.0 / obs. 174639482
Vancouveria hexandra, photographed by Hilary Rose Dawson
fig. h Hilary Rose Dawson, CC BY 4.0 / obs. 161030709

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 3 botanical countries

Regions where Vancouveria hexandra is native: California, Oregon, Washington CaliforniaOregonWashington
Native distribution of Vancouveria hexandra, 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
California CAL NORTHERN AMERICA
Oregon ORE
Washington WAS

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 464 in flower of 974 examined

Peak flowering in Jun. Each bar is the share of Vancouveria hexandra 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. 464 of 974 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 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 6 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.

  • Caulophyllum gracile Douglas ex Hook.
  • Epimedium hexandrum Hook.
  • Sculeria geminata Raf.
  • Vancouveria brevicula Greene
  • Vancouveria parvifolia Greene
  • Vancouveria picta Greene

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.