Spiranthes incurva(Jenn.) M.C.Pace

WFO wfo-0001428711 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Spiranthes incurva, photographed by Lynn Harper
fig. a Lynn Harper, CC0 1.0 / 2021-09-10 / obs. 156567204
Spiranthes incurva, photographed by Quinten Wiegersma
fig. b Quinten Wiegersma, CC BY 4.0 / obs. 156975887
Spiranthes incurva, photographed by Quinten Wiegersma
fig. c Quinten Wiegersma, CC BY 4.0 / obs. 156093688
Spiranthes incurva, photographed by M. Squire
fig. d M. Squire, CC BY 4.0 / obs. 154610965
Spiranthes incurva, photographed by Ryan Sorrells
fig. e Ryan Sorrells, CC BY 4.0 / obs. 153600198
Spiranthes incurva, photographed by Ryan Sorrells
fig. f Ryan Sorrells, CC BY 4.0 / obs. 153596020
Spiranthes incurva, photographed by JCorven
fig. g JCorven, CC BY 4.0 / obs. 152784185
Spiranthes incurva, photographed by M. Squire
fig. h M. Squire, CC BY 4.0 / obs. 97102475

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 17 botanical countries

Regions where Spiranthes incurva is native: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, New Brunswick, New Hampshire, Ohio, Ontario, Pennsylvania, Québec, South Dakota, Vermont, Wisconsin IllinoisIndianaIowaKansasMichiganMinnesotaMissouriNebraskaNew BrunswickNew HampshireOhioOntarioPennsylvaniaQuébecSouth DakotaVermontWisconsin
Native distribution of Spiranthes incurva, 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
Illinois ILL NORTHERN AMERICA
Indiana INI
Iowa IOW
Kansas KAN
Michigan MIC
Minnesota MIN
Missouri MSO
Nebraska NEB
New Brunswick NBR
New Hampshire NWH
Ohio OHI
Ontario ONT
Pennsylvania PEN
Québec QUE
South Dakota SDA
Vermont VER
Wisconsin WIS

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 243 in flower of 246 examined

Peak flowering in Sep. Each bar is the share of Spiranthes incurva 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. 243 of 246 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 1 synonym

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.

  • Ibidium incurvum Jenn.

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.