Eriogonum cernuumNutt.

nodding buckwheat

WFO wfo-0000674571 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Eriogonum cernuum, photographed by Bobby McCabe
fig. a Bobby McCabe, CC BY 4.0 / 2021-09-28 / obs. 160957339
Eriogonum cernuum, photographed by Robbie Hannawacker
fig. b Robbie Hannawacker, CC0 1.0 / obs. 158029785
Eriogonum cernuum, photographed by Bobby McCabe
fig. c Bobby McCabe, CC BY 4.0 / obs. 154390527
Eriogonum cernuum, photographed by Bobby McCabe
fig. d Bobby McCabe, CC BY 4.0 / obs. 153014501
Eriogonum cernuum, photographed by Bobby McCabe
fig. e Bobby McCabe, CC BY 4.0 / obs. 152800431
Eriogonum cernuum, photographed by John Brew
fig. f John Brew, CC BY 4.0 / obs. 109433424
Eriogonum cernuum, photographed by Matt Berger
fig. g Matt Berger, CC BY 4.0 / obs. 91747697
Eriogonum cernuum, photographed by Jim Morefield
fig. h Jim Morefield, CC BY 4.0 / obs. 61824229

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 15 botanical countries

Regions where Eriogonum cernuum is native: Alberta, Arizona, California, Colorado, Idaho, Montana, Nebraska, Nevada, New Mexico, Oregon, Saskatchewan, South Dakota, Utah, Washington, Wyoming AlbertaArizonaCaliforniaColoradoIdahoMontanaNebraskaNevadaNew MexicoOregonSaskatchewanSouth DakotaUtahWashingtonWyoming
Native distribution of Eriogonum cernuum, 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
Alberta ABT NORTHERN AMERICA
Arizona ARI
California CAL
Colorado COL
Idaho IDA
Montana MNT
Nebraska NEB
Nevada NEV
New Mexico NWM
Oregon ORE
Saskatchewan SAS
South Dakota SDA
Utah UTA
Washington WAS
Wyoming WYO

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 56 in flower of 59 examined

Peak flowering in Aug. Each bar is the share of Eriogonum cernuum 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. 56 of 59 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 9 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 8 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.

  • Eriogonum cernuum subsp. acutangulum S.Stokes
  • Eriogonum cernuum subsp. tenue (Torr. & A.Gray) S.Stokes
  • Eriogonum cernuum subsp. viminale S.Stokes
  • Eriogonum cernuum var. cernuum
  • Eriogonum cernuum var. psammophilum S.L.Welsh
  • Eriogonum cernuum var. tenue Torr. & A.Gray
  • Eriogonum cernuum var. umbraticum Eastw.
  • Eriogonum cernuum var. viminale (S.Stokes) Reveal

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.